IMac CPU Issue

Is this a normal reading for CPU usage when no applications are running:
%user: 37
%system: 20
%idle: 43
I have a feeling it is not. I noticed a "clicking" or "grinding" sound coming from the left side of my imac last week. I took it into the Apple Store and they replaced one of the CPU fans due to a "ball bearings" issue. I just got the machine back and the clicking hasn't gone away. The CPU usage is still running at the above numbers. Could anyone help me with this issue?

Since it does not happen in Safe Mode, it may be one of those non-essential or third-party processes that is the cause.
Before resorting to erasing and reinstalling, you can do this additional test. Start up normally. Create a new admin user account in System Preferences Accounts pane.
http://docs.info.apple.com/article.html?path=Mac/10.5/en/8235.html
Log out and log in to the new user account. Does the problem occur in the new account? If it does NOT, the cause is likely something in your normal user account, most likely a process that runs automatically. You do not need to do an erase and reinstall. When logged into your normal account, check System Preferences Accounts pane +Login Items+ tab. That shows processes that run automatically when you log in. If there is anything that you do not need, remove it. For the rest, find out what each item does, and see if removing it makes any difference. You can log out and log back in to test the effect (or restart).
If the problem DOES recur in the new account, then the cause is likely to be at the system (OS) level. One thing to check there are third-party system extensions that load during startup; they would not load for a +Safe Mode+ startup. They are usually located in one of these places
<startup disk>/System/Library/Extensions/
<startup disk>/Library/Extensions/
<startup disk>/Library/PreferencePanes/
If you see anything obvious, you can try removing it and restarting. These are somewhat more difficult to trouble-shoot than Login Items.
You mentioned using iStat. I don't know if that loads an extension, or it just runs in your account as a Login Item, but you can try removing or disabling that one.
I'll write a separate post for doing an erase and install...

Similar Messages

  • MainStage 2.2.1 - CPU issues with old MacBook

    I just downloaded MainStage 2 for my trusty old MacBook - it's 2.0GHz Core Duo, 2GB... best spec you can make it really.
    I use it to run both Ableton Live and Garageband with absolutely no problems... The CPU handles both apps fine, unless I have some stuff running in the background. But most of the time the CPU hovers around 50%.
    So I was quite surprised when I downloaded MainStage 2 and started using it... The CPU is pretty constant at about 100%. Sometimes it goes up as far as 150%. And this is when idle! Although I don't have much memory, MainStage is not taking up a huge amount (about 350MB) and I still have some headroom left... So I'm assuming that isn't the issue.
    I've looked at other threads and one solution was to up the audio buffer time in the preferences. Mine was already set to 256 samples, but I tried higher and it didn't make any difference. Can anyone help? I bought it for live performance, but considering how dodgy it's looking with the CPU, I'm a little worried about doing so.
    Thanks!

    Hi Chiccorosso!
    I appreciate that I'm "playing with the big boys now" and that my hardware is pretty old... However I was just really confused as to why it was this bad... Garageband handles playing a piano patch with ease, whereas MainStage, set up to do exactly the same task, runs my CPU at full pelt even when no sounds are being played!
    I've seen others mention CPU spikes too, where the sound cuts out, which isn't good for a live performance obviously... And these people are on machines with much better specs than mine. Using up 100% CPU for a task such as this does make me wonder whether there is some seriously unoptimised code in MS... Ableton Live is pretty professional and copes way better.
    As to your points:
    My MacBook's maximum official RAM upgrade is 2GB, so mine is maxed-out in that respect. Apparently it can access up to 2.5GB, but the only way of doing that is by buying 4GB RAM and effectively wasting 1.5GB of it. But I take your point, and perhaps it's worth the money for that extra half a gig. What do you think?
    I will try the 0dB limiting as you suggested, but I don't think I was ever playing up to those volume levels. Obviously when I'm not playing anything, there is no sound level at all and yet still the CPU is blazing away around 100%.
    What do you mean by little icons in the menu bar? Are you referring to my OS menu bar items? I do have iStat Menus installed which is very handy for noticing these CPU issues but I will disable them all and see if it makes a difference.
    I have the two default effects running through the buses (I don't know all the terminology yet because I'm very new to it!). I don't really need both, but I do need at least reverb or it'll defeat the object of me using MS. I'll try cutting back and see what happens.
    Thanks

  • IMac Freezing Issue -Need Confirmation...

    Hey all,
    I need confirmation on whether or not zapping the PRAM seems to stop the iMac freezing issue. I have had 3 freezes within 10 minutes. I restarted after my last preparation to installing Leopard and the screen saver kicked in, which is the 'Cosmos' slide show and the graphics froze up. Screen went black and I left it for a couple of minutes. I came back to it, and had an image on the screen, but it was still locked up. So I restarted it. After boot up, I opened Activity monitor, and locked up again.
    So I zapped the PRAM on this 3rd restart and have not locked up since. I'd bet 100 to 1 that if I were to restart, without the PRAM reset, I would crash within 5 minutes of the start up.
    I really believe without a doubt these iMac reboot issues are related to specific EFI versions failing to initialize graphics correctly.
    Can anyone confirm this? If your iMac crashes, does Zapping the PRAM fix it?
    I'll be calling Executive relations contact and telling her the bad news.
    Okay, so first off, this isn't a solution to this iMac plague, but it should prevent the freezing and NO, it does not have to do with removing the ATI drivers.
    I was asked to install Leopard by Executive relations at Apple and told her that, as soon as I do, my iMac will freeze. So, I have been preparing the Leopard install and have crashed 3 times, in a row... at that point I said, Leopard is going to be a no go but I needed to use my iMac without it crashing. So, zapped the PRAM like I did before and immediately the graphic freezes went away.
    So

    Here is my experience, iMac 24:
    I bought in JR NY 2 weeks ago. I had to use it without internet connection (so no updates) and no freezes.
    Then I connected to internet and installed the available updates and start to get the freezes, even trying the PRAM reset.
    I tried to remove the extra memory, change memory slot but no lucky, video artifacts (like pixels not refreshing) when moving the mouse over the dock icons then freeze.
    I had no other softwares installed at all, only the OS applications.
    I formatted the HD and reinstalled the Tiger and didn't accepted any update, so I could use the imac for 2 days without a single freeze, but some black screens when screen saver starts.
    Since no freezes, I decided to update the OS again and after the first boot the freezes came back very fast, I could start a freeze in about 10 seconds.
    I tried the PRAM reset without sucess and my machine was ready to go to a tech person.
    Yesterday I updated the OS to 10.4.11 and did a PRAM reset after the update and tested the machine for 2 hours without a freeze or video artifacts, looks very stable, but I have to test it more.
    You guys tried the Tiger last update ?
    Ulisses

  • Latest 10.8.5 mod slowed my computer - kernel_task cpu issue

    Installed the 10.8.5 supplemental mods and the Java update last night.  After doing so, the kernel_task cpu issue - which I had eliminated a year ago - has come back.  It is making time-machine unusable in both normal and safe mode.  How do I fix?  Backing out or restoring to previous time machine settings seems impossible due to the processing speeds.  Reinstall??

    Final answer!  This was a case where the 10.8.5 updates overwrote / reinstalled the "plist" files which control the power throttling of the CPU.  The pasted link has a whole discussion and fix with the details.  I had run with this fix since Aug 2012 and this was the first Mountain Lion upgrade that caused me to re-do it.  As an FYI, there are RISKS specified with this fix, but in my case I have not come close to having excessive temps or any functional issues.
    http://www.rdoxenham.com/?p=259&cpage=2#comment-22586

  • G42-415DX cpu issue

    Hello, this is my first time on these forums.
    -My laptop is a HP G42-415DX (product: XZO46UA#ABA) notebook
    -os is windows 7 home premium
    -LED code is 1 blink, which is cpu issue
    -can't remeber any changes besides installing new java.
    So heres how it started, I turn it on, and it won't boot. Won't go into post screen either. Gives me a blink code indicating its the cpu. So before buying a replacement cpu I did some troubleshooting, I hooked the laptop up into another monitor, and its still blank. I cleaned the whole laptop inside and out, and it still didn't work. The ram and the hdd are seated properly. Today a new replacement cpu arrived in the mail (AMD Athlon II p340 mobile). I replaced the cpu into the socket s1g4 on my motherboard, making sure not to push it in or put too much thermal compound on it. I power it up and i still get the same error. I have performed a power reset also.
    Anyone have any ideas on what could be the problem, or what could be the next step to troubleshoot the system?

    hi dear
    i have same laptop and the same problem with soundnaut
    what you advise me ?

  • CPU Issues with music production. LOGIC 8

    CPU Issues with music production.
    Hey guys. I bet this sort of question has been asked so many times, but i really have spent a long time searching google to get an answer. I have had no luck. I found many things on the subject, but nothing about this exact situation.
    Okay, I have a Macbook 4.1 which has 2gb of ram, 2.1 GHz Intel core 2 duo processor, and a 111 gb HD with a rpm of 5400.
    I have been having major CPU overloads whilst using Logic 8, And it is much worse when using Pro Tools 7.2 M-Powered.
    Now, im not that knowledgeable with computer stuff, but I have a plan.
    Im about to upgrade my ram to 4gb, and im getting a new hard drive that will be 320 gb and will be 7200 rpm and 16gb cache (whatever that means).
    I believe that having a hard drive at 7200 rpm is pretty essential for music programs like these.
    Now hopefully this will help me with the CPU, as i have found out I cant upgrade the processor as its soldered on.
    Will this machine be able to handle Logic Pro 8 after the mod??
    The real question i guess is: Is a "2.1 GHz Intel Core 2 Duo" processor enough to happily run logic 8?
    P.S I will not be recording audio. I use the synths etc included.
    Thanks in advance guys.

    Alexander Farrar wrote:
    Okay, I have a Macbook 4.1 which has 2gb of ram, 2.1 GHz Intel core 2 duo processor, and a 111 gb HD with a rpm of 5400.
    111Gigs is a small disk
    How much free space in your system disk?
    when a disk contain files from over than 80% and only about 20% is free the speed of the hard drive goes down... some disk can loose more than 50% of fast addressing speed
    Leopard require at least 50GB free space for run without problem!
    for better performance up to 1/3 of the disk size should be required...
    I have been having major CPU overloads whilst using Logic 8, And it is much worse when using Pro Tools 7.2 M-Powered.
    you use Logic with a Digidesign Drivers?
    try to disconnect the Digi device and use Internal Audio of your Mac...
    maybe only that can solve your issue.
    Im about to upgrade my ram to 4gb, and im getting a new hard drive that will be 320 gb and will be 7200 rpm and 16gb cache (whatever that means).
    buying a 320GB at 7200?
    I suggest you a 500GB at 5400 RPM
    the 7200 Hard drive are not so good for stay inside Macbook chassis
    the working temperature in a 7200 RPM disk should be cause slower speed than a more cool/fresh 5400 RPM
    The temperature rise up if disk is full over than 1/3 of its capabilities...
    (this rules are related with Disk performance but can be affected also CPU power in the real time processing because the system run on the same disk)
    The hard drive temperature is strictly related with disk speed performance
    and logic use a lot of streaming from to disc access for the EXS24 virtual memory and other Instruments and Synths...
    *this can be the primary cause of CPU spikes*
    I believe that having a hard drive at 7200 rpm is pretty essential for music programs like these.
    I suggest a 500GB 5400 RPM!
    G

  • Another iMac Freezing Issue - pls help a newbie out

    I understand this problem is not uncommon - I've been trying to read the many threads I see on the issue. However, most posts outline problems, suggestions are made, but then reported to not work. Also, many threads are 2 years old.
    Could someone please suggest a step-by-step troubleshooting solution?
    Here are my pertinent facts:
    * Bought 20" iMac in July 07.
    * Processor: 2.16 GHz Intel Core 2 Duo
    * Memory: 3GB 667 MHz DDR2 SDRAM
    * Hubs installed the second memory stick a while ago (over a year and i don't remember this problem correlating with the new memory).
    * Video: ATI Radeon X1600
    * OS: Mac OS X 10.6.2
    * HD: 250GB capacity, 31GB available
    * I am using an external harddrive to back up my stuff (LaCie, connected by firewire)
    * Frequently used apps: Firefox, iPhoto, Photoshop Elements, Parallels (Quicken for PC), MS Office for Mac, etc.
    The problem starting occurring several months ago, while I was still running Tiger. Have since upgraded to Snow Leopard, with no improvement, in fact, things are getting worse.
    I get display distortion ("artifacts"?) - horizontal lines, blocks of the screen distort, usually clearing after dragging that part of the app off the screen of view and then back.
    Typically, if I start seeing display issues, a freeze up is imminent.
    Sometimes I get a sense it's coming soon - things run more slowly. Other times, it seems without provocation. I click on a window and nothing happens.
    Sometimes it's the wheel of death other times screen completely locks up with no spinning wheel. No option to force quit. Mouse is unresponsive. Keyboard appears to be, although I can toggle the Caps lock button on and off (light toggles). If I am streaming video, the screen will lock up, but the audio continues. If I wait (have gone to bed and come back in the am) it is still frozen.
    If I am streaming video (i.e Hulu on Firefox) or working in memory intensive applications (Windows, Parallels, Photoshop Elements, etc.) Problem is more frequent.
    I can go a day or so without problems, but if I am doing anything slightly involved, it happens much more frequently, as often as every 10 minutes or half hour or so.
    Steps I have taken:
    I always have to do a hard reboot. I have run disk utility multiple times, occasionally it finds and corrects stuff, but no fix seems to be permanent.
    I have seen suggestions of resetting PRAM as well as doing a clean re-install, but also seen that those fixes haven't endured.
    I don't have Apple Care and I'm not sure what steps I should be taking to fix this. Is there hope? I mostly see lots of problems reported, but not successful resolution.
    It's aggravating because I can't use the system for the stuff I bought it for (ex: digital scrapbooking) without worrying about losing my data. I switched to a Mac because I heard they ran so great and were "cool" to boot. While there have been many features of the Mac i enjoy, *if this kind of performance is typical after 2 yrs of use, I will not remain loyal to Apple.*
    If you have been successful in resolving the issue with Apple, what did you tell them and what did they do?
    I am competent system "user", but not as good when it gets into the weeds. Would appreciate any advice, feel free to spell it out as tho I were an idiot.
    I would appreciate a "try this, then try this" approach, especially if you have tried it and it has worked for you.
    Thanks for the help,
    Kendra

    OK, Mean, I mean Meanest, we have the same system (mine was purchased late 2006), and I can say we have identical symptoms. I agree with Paul_31 regarding disk space, but in addition, from all the posts on various Apple forums, it seems clear that the problem is due to the Radeon X1600 graphics card AND heat. These elegantly-designed Macs that we all love have a lot of stuff packed into a small package. Consequently they run hot, and over time the result is components bake and deteriorate. In our case, the weak link seems to be the Radeon card and since it’s not easily replaced, repair costs are nearly as much as the cost of a new iMac. A contributing factor is that over time dust will build up inside your Mac, and this serves as insulation, retarding heat transfer, and causing components to run hotter still.
    OK, so that’s the sad tale, but what can you do? Assuming your system is not too far gone due to the ravages of heat over time, there are things you can do to help prolong it’s life, and hopefully get it to behave itself better until the time it finally fails completely.
    In my case, the steps I’ve taken have resulted in a system that now “generally” runs for days at a time without locking up/crashing. A caveat: these are bandaids, not true fixes. I’m convinced the Radeon card will eventually fail and I’ll be faced with shopping for a new Mac – I’m only hoping the steps taken will give me a few more years of use before that happens. So, here’s my suggestions (basically they all have to do with getting your Mac to run cooler and being able to monitor temps so you know just how hot things are getting):
    1. First of all, if you don’t already have one, get one of the free programs available to monitor your Mac’s internal temperatures. One of the most popular ones is a widget, iStat Pro. As I type this iStat Pro is showing my temps are as follows:
    Hard Drive 92 deg. F
    CPU 85 F
    Ambient Air 69 F
    GPU Diode (graphics card) 92 F
    Hard Drive Bay 95 F
    Memory Controller 90 F
    Optical Drive 81 F
    If you have iStat Pro and see that your temps are about the same as these, I would say don’t bother to read further – you may have a different set of problems. If your temps are 10-20 F (or more) higher, keep reading.
    2. Try to clean out the internals of your Mac with compressed air. After 3+ years of use, I used an air compressor with an air gun attachment and blew through the vents at the back and bottom of my Mac with 60-80psi and actually saw a cloud of dust come out of my Mac. A more effective approach would entail cracking open the case of the Mac so you could really blow directly on the different boards/components. I haven’t done that, but I’m tempted to give it a try. Note: Some have suggested vacuuming and/or using a can of compressed air. I don’t think that approach is all that effective. You need a really strong flow of air to get that dust out of the inards.
    3. Download the free program SMC Fan Control (v 2.2.2). It will allow you to adjust the fan speeds higher for each of the 3 internal fans. The Mac has firmware that ramps up the speeds of these fans as internal temps rise, but the general consensus is the Mac firmware is “too little, too late”. With the standard Mac firmware, the fans will run at their default settings well beyond the point where the components are already way too hot. SMC Fan Control allows you to set the minimum fan speeds higher than the Mac default.
    Once you've done these steps, I'd suggest doing a SMC reset, then re-boot while keeping your fingers crossed.
    This is getting too long so I’ll stop for now. Good luck...

  • Imac power issue - randomly shuts down & won't turn on again

    Hello
    Just wondering if anybody could help us with this issue as the Apple Genius's failed to...
    Our early 2006 Intel Imac has recently started to switch off at random times. There doesn't seem to be any particular point at which it will do this and no warning either. It's as if somebody has pulled the plug out but the power supply has not been touched! It then often won't allow you to switch it on again until you have left it over night - or sometimes it will switch on after a few minutes.
    It is very frustrating as you never know when it might happen, it has been ok for a couple of weeks but now it has done it twice in the last two days.
    We did take it to the Apple Store, who said they had kept it on for a day and could not replicate the issue so therefore there is nothing they can do...
    If anybody can shed any light on this mystery it would be VERY much appreciated.
    Thank you!

    Hello and welcome to the club of "random shut down".
    Since 8 days I am also having this problem on an early 2006 2 GHz intel core duo with OS 10.4.11 After approx. 5-10 minutes it shuts down and the only way to wake up again is to disconnect the plug, wait 10 sec and connect it again and push the start button on the back.
    There a many discussions ongoing and also many suggestions (SMC reset, memory replacement, change the power cord etc.). Nothing really worked in my situation. My assumption is something with overheating, but the widget "istatpro" or "tempmonitor" are showing not more than 35°C on the CPU at a max.
    I found a little tool called "smcFanControl" to adjust the minimum speed of the fans (my settings: ODD 2850 rpm, HDD 3150 and the CPU fan at 2160 rpm) and since that adjustment the working period seems to be much longer. Sure, there is an annoying noise now, but I can use the imac again.
    Hope that there will be a better solution soon.

  • IMac boot issues, panic report since Yosemite upgrade

    I've been having serious issues getting my iMac to boot ever since upgrading to Yosemite - Basically it turns on, makes the chiming sound, goes to the white screen with the apple logo and progress bar and at about 1/3 of the way, goes blank white/black, then either reboots on a loop or freezes until I'm forced to manually shut it down.
    When I boot in safe mode, I get this ProblemReport:
    Anonymous UUID:       CFB3276F-B26B-291C-F495-653576C46E49
    Wed Oct 22 16:58:32 2014
    *** Panic Report ***
    panic(cpu 0 caller 0xffffff800c77a590): "a freed zone element has been modified in zone ipc importance inherit: expected 0x58a9e1599e00910 but found 0xbfbfbf00bfbfbf, bits changed 0x53521aa995fb6af, at offset 0 of 88 in element 0xffffff801f2c7e40, cookies 0x3f001114074f583a 0x53521aa995fb6af"@/SourceCache/xnu/xnu-2782.1.97/osfmk/kern/zalloc.c:496
    Backtrace (CPU 0), Frame : Return Address
    0xffffff811662b910 : 0xffffff800c73a811
    0xffffff811662b990 : 0xffffff800c77a590
    0xffffff811662ba00 : 0xffffff800c779c17
    0xffffff811662ba40 : 0xffffff800c778de7
    0xffffff811662bb70 : 0xffffff800c720a3b
    0xffffff811662bc40 : 0xffffff800c7337ff
    0xffffff811662bcb0 : 0xffffff800c72b873
    0xffffff811662bd00 : 0xffffff800cbb89e0
    0xffffff811662bdc0 : 0xffffff800cbb6fc0
    0xffffff811662be30 : 0xffffff800cbb8860
    0xffffff811662bf20 : 0xffffff800cbb6627
    0xffffff811662bf50 : 0xffffff800cc4dcb2
    0xffffff811662bfb0 : 0xffffff800c83ac46
    BSD process name corresponding to current thread: diagnosticd
    Mac OS version:
    14A389
    Kernel version:
    Darwin Kernel Version 14.0.0: Fri Sep 19 00:26:44 PDT 2014; root:xnu-2782.1.97~2/RELEASE_X86_64
    Kernel UUID: 89E10306-BC78-3A3B-955C-7C4922577E61
    Kernel slide:     0x000000000c400000
    Kernel text base: 0xffffff800c600000
    __HIB  text base: 0xffffff800c500000
    System model name: iMac11,1 (Mac-F2268DAE)
    System uptime in nanoseconds: 24152197674
    last loaded kext at 23160986348: com.apple.driver.AppleBluetoothMultitouch 85.3 (addr 0xffffff7f8e5df000, size 61440)
    loaded kexts:
    com.apple.driver.AppleBluetoothMultitouch 85.3
    com.apple.driver.AppleHDAHardwareConfigDriver 266.5
    com.apple.driver.AppleTyMCEDriver 1.0.2d2
    com.apple.driver.AGPM 100.14.37
    com.apple.driver.AppleMikeyHIDDriver 124
    com.apple.driver.AppleHDA 266.5
    com.apple.iokit.IOBluetoothSerialManager 4.3.0f10
    com.apple.filesystems.autofs 3.0
    com.apple.driver.AppleOSXWatchdog 1
    com.apple.driver.AppleMikeyDriver 266.5
    com.apple.driver.AppleHWSensor 1.9.5d0
    com.apple.driver.AppleUpstreamUserClient 3.6.1
    com.apple.kext.AMDFramebuffer 1.2.8
    com.apple.iokit.IOUserEthernet 1.0.1
    com.apple.iokit.IOBluetoothUSBDFU 4.3.0f10
    com.apple.ATIRadeonX2000 10.0.0
    com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.0f10
    com.apple.driver.AppleLPC 1.7.3
    com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
    com.apple.kext.AMD4800Controller 1.2.8
    com.apple.Dont_Steal_Mac_OS_X 7.0.0
    com.apple.driver.AppleHWAccess 1
    com.apple.driver.AppleHV 1
    com.apple.driver.AppleMuxControl 3.7.21
    com.apple.driver.AppleBacklight 170.4.12
    com.apple.driver.AppleMCCSControl 1.2.10
    com.apple.driver.AppleIRController 327.5
    com.apple.driver.AppleUSBCardReader 3.5.0
    com.apple.driver.AppleFileSystemDriver 3.0.1
    com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
    com.apple.BootCache 35
    com.apple.iokit.SCSITaskUserClient 3.7.0
    com.apple.driver.XsanFilter 404
    com.apple.iokit.IOAHCIBlockStorage 2.6.5
    com.apple.driver.AppleUSBHub 705.4.1
    com.apple.driver.AppleFWOHCI 5.5.2
    com.apple.driver.AirPort.Atheros40 700.74.5
    com.apple.iokit.AppleBCM5701Ethernet 10.1.2b3
    com.apple.driver.AppleAHCIPort 3.0.7
    com.apple.driver.AppleUSBEHCI 705.4.14
    com.apple.driver.AppleUSBUHCI 656.4.1
    com.apple.driver.AppleRTC 2.0
    com.apple.driver.AppleACPIButtons 3.1
    com.apple.driver.AppleHPET 1.8
    com.apple.driver.AppleSMBIOS 2.1
    com.apple.driver.AppleACPIEC 3.1
    com.apple.driver.AppleAPIC 1.7
    com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0
    com.apple.nke.applicationfirewall 161
    com.apple.security.quarantine 3
    com.apple.security.TMSafetyNet 8
    com.apple.driver.AppleIntelCPUPowerManagement 218.0.0
    com.apple.driver.IOBluetoothHIDDriver 4.3.0f10
    com.apple.driver.AppleMultitouchDriver 260.30
    com.apple.driver.DspFuncLib 266.5
    com.apple.kext.OSvKernDSPLib 1.15
    com.apple.iokit.IOAudioFamily 200.6
    com.apple.vecLib.kext 1.2.0
    com.apple.iokit.IOSerialFamily 11
    com.apple.kext.triggers 1.0
    com.apple.iokit.IOSurface 97
    com.apple.iokit.IOFireWireIP 2.2.6
    com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.0f10
    com.apple.iokit.IOUSBUserClient 705.4.0
    com.apple.driver.AppleHDAController 266.5
    com.apple.iokit.IOHDAFamily 266.5
    com.apple.driver.AppleSMBusPCI 1.0.12d1
    com.apple.driver.IOPlatformPluginLegacy 1.0.0
    com.apple.driver.IOPlatformPluginFamily 5.8.0d49
    com.apple.kext.AMDSupport 1.2.8
    com.apple.AppleGraphicsDeviceControl 3.7.21
    com.apple.iokit.IOBluetoothFamily 4.3.0f10
    com.apple.driver.AppleSMC 3.1.9
    com.apple.driver.AppleGraphicsControl 3.7.21
    com.apple.driver.AppleBacklightExpert 1.1.0
    com.apple.iokit.IONDRVSupport 2.4.1
    com.apple.driver.AppleSMBusController 1.0.13d1
    com.apple.iokit.IOGraphicsFamily 2.4.1
    com.apple.iokit.IOUSBHIDDriver 705.4.0
    com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.0
    com.apple.iokit.IOUSBMassStorageClass 3.7.0
    com.apple.driver.AppleUSBMergeNub 705.4.0
    com.apple.driver.AppleUSBComposite 705.4.9
    com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.0
    com.apple.iokit.IOBDStorageFamily 1.7
    com.apple.iokit.IODVDStorageFamily 1.7.1
    com.apple.iokit.IOCDStorageFamily 1.7.1
    com.apple.iokit.IOAHCISerialATAPI 2.6.1
    com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.0
    com.apple.iokit.IOFireWireFamily 4.5.6
    com.apple.iokit.IO80211Family 700.52
    com.apple.iokit.IOEthernetAVBController 1.0.3b3
    com.apple.driver.mDNSOffloadUserClient 1.0.1b8
    com.apple.iokit.IONetworkingFamily 3.2
    com.apple.iokit.IOAHCIFamily 2.7.0
    com.apple.iokit.IOUSBFamily 705.4.14
    com.apple.driver.AppleEFINVRAM 2.0
    com.apple.driver.AppleEFIRuntime 2.0
    com.apple.iokit.IOHIDFamily 2.0.0
    com.apple.iokit.IOSMBusFamily 1.1
    com.apple.security.sandbox 300.0
    com.apple.kext.AppleMatch 1.0.0d1
    com.apple.driver.AppleKeyStore 2
    com.apple.driver.AppleMobileFileIntegrity 1.0.5
    com.apple.driver.AppleCredentialManager 1.0
    com.apple.driver.DiskImages 389.1
    com.apple.iokit.IOStorageFamily 2.0
    com.apple.iokit.IOReportFamily 31
    com.apple.driver.AppleFDEKeyStore 28.30
    com.apple.driver.AppleACPIPlatform 3.1
    com.apple.iokit.IOPCIFamily 2.9
    com.apple.iokit.IOACPIFamily 1.4
    com.apple.kec.corecrypto 1.0
    com.apple.kec.Libm 1
    com.apple.kec.pthread 1
    Model: iMac11,1, BootROM IM111.0034.B02, 4 processors, Intel Core i7, 2.8 GHz, 8 GB, SMC 1.54f36
    Graphics: ATI Radeon HD 4850, ATI Radeon HD 4850, PCIe, 512 MB
    Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334548312D4346382020
    Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334648302D4346382020
    Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334648302D4346382020
    Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334548312D4346382020
    AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.74.0-P2P
    Bluetooth: Version 4.3.0f10 14890, 3 services, 27 devices, 0 incoming serial ports
    Network Service: Wi-Fi, AirPort, en1
    Serial ATA Device: Hitachi HDS722020ALA330, 2 TB
    Serial ATA Device: OPTIARC DVD RW AD-5680H
    USB Device: Hub
    USB Device: Internal Memory Card Reader
    USB Device: BRCM2046 Hub
    USB Device: Bluetooth USB Host Controller
    USB Device: Hub
    USB Device: IR Receiver
    USB Device: Built-in iSight
    Thunderbolt Bus:
    I have a late 2009, 27" iMac, 2.8 GHz, 8gb Ram - was running Mavericks, upgraded to Yosemite
    Ive run disk utility and verified disk multiple times - on one occasion it said the HD was corrupt but successfully fixed and hasn't reappeared since.
    I've also run the hardware test (hold down D as computer restarts) with no problems found
    And the ram reset thing (hold down R when computer restarts)
    Ive also reinstalled Yosemite and clean Installed it so my computer is now empty.
    I've also taken out each piece of ram and tried booting with each individual piece (the same problem occurred with each piece)

    I am experiencing this same exact problem; however, I upgraded to Yosemite a couple of weeks ago and didn't experience any problems until this past Friday.  The only other thing that's been done since then was installing some updated drivers for my daughter's Wacom Intuos Tablet.  Everything was fine for a bit and then (as best we can tell), the video froze up on my son while he was using it and he walked away without shutting it down.  We *think* it got overheated and appears to have resulted in the ATI Radeon HD 4850 now causing kernel panics during boot-up.
    Symptoms:
    On boot, the chime plays and apple logo appears and the progress bar begins to fill in until it gets about 1/4 of the way across.
    After the progress bar gets about 1/4 of the way across, the screen goes gray/white, then black while the machine shuts down and re-starts
    The machine starts back up and there is an error message (sometimes) that appears and says something went wrong during boot.
    After a bit (or if I press a key), the whole cycle starts all over again with Step 1. above.
    I've done the following, myself, to no avail:
    Reset the SMC (unplug the power and all cables, wait 15-20 seconds and plug the power back in) - didn't help
    Reset the NVRAM/PRAM - didn't help
    Attempted to boot into Safe Mode - boots and then the display shifts to the left and has garbled/pixelated squares on the bottom right corner
    Attempted to boot from the 10.6.2 DVD that came with the iMac when we purchased it back in November, 2011 - boots and then the entire display is pixelated/garbled
    Ran the Apple Hardware Test (simple (5+ minutes) and extensive (1+ hours) - no problems found by either, but it didn't appear that the GPU was tested during this diagnostic
    Verified that the EFI and SMC firmware is up to date with the latest for the iMac 11,1
    Booted into the Recovery Partition (this is the only thing that has succeeded)
    Recovery Mode:  Ran the Disk Utilities to verify the 1TB HD - no issues with the disk or with permissions.
    Recovery Mode:  Created a .dmg of my entire 1TB Disk to a backup drive (No time machine backups...I know, bad practice on my part).
    Recovery Mode:  Attempted to re-install Mac OS X Yosemite - problem persists on reboot
    Recovery Mode:  Erased and Low-Level (1 pass) write of the entire 1TB partition on the HD and re-installed Mac OS X Yosemite - problem persists on reboot
    When I attempt to boot into Safe Mode (Verbose: Command + Shift + V rather than Command + Shift), the messages scroll from the screen before I can catch what it's saying, but it appears to be stating that the machine is re-booting after a kernel panic due to display problems...which correlates with the garbled/pixelated display.
    I've found a couple of other posts on here and they seem to point to the ATI Radeon HD 4850 and issues with it overheating and going tango uniform as well.
    Basic Troubleshooting of Gray Screen Situations:  Mac OS X: Gray screen appears during startup - Apple Support
    Specific Troubleshooting and ATI Radeon Info:  09 27" iMac 2.66 grey garbled screen, no boot up   10.8.3. /  Senior mods please
    I've scheduled an appointment to take it into the Apple Store next Saturday (my first available) to have them verify my findings.  I'm hoping and praying that it doesn't cost an arm and a leg to repair/replace the GPU...can't really afford it right now.
    At any rate, I hope this information is useful to you!

  • IMac Memory Issues: "Your Mac OSX Startup Disk Has No More Space Available"

    Hi all,
    I've done some extensive searching on my issue, and haven't been able to find a solid solution.  I was hoping that if I shared my specific problem, it might shed some light on what is going on.  My OS is current:  10.8.2  with plenty of HD space (over 250 GB) and 4 GB ram.
    Over the past couple of days, my iMac has become very slow and laggy.  Most times I will eventually get the message:  "Your Mac OSX Startup Disk Has No More Space Available".  This is after it has been lagging for quite a while, sometimes several hours.
    I will restart, things will be sufficiently fast for a few minutes, but once I start working in any application (including any browser, or adobe software) it starts to slow down until it is eventually to a crawl, with the spinny wheel showing up often, even when only one application is open at a time.  It doesn't take more than several minutes to start slowing down.  Even simple things like hovering over the dock start to really lag, or opening my applications folder or System Preferences can take upwards of 15-30 seconds, even several minutes sometimes.
    Here's some steps I've taken so far:
    -  Checked the activity monitor and system memory seems fine.  No single app takes up more than 7% or so of memory at any given time.  1.65 GB active, 1.64 GB inactive, about 700 MB wired, free about 4 MB.  VM size is 247 GB, CPU also seems OK:  (%user around 10-20%, %System around 10%, Idle around 70-80%).  No single app seems to be taking up an excessive amount of Real Memory.
    -  Permissions repair (It found some things to fix, but never completely finished, seemed to freeze after several hours, tried it several times)
    -  Checked disk for repair (no problems found), did the S.M.A.R.T check and ran tests again using Onyx.
    -  Re-indexed Macintosh HD
    -  I saw a suggestion to reset the PRAM, so I did that.
    I do have the system backed up via Time Machine.  Suggestions for further action are very much appreciated!

    Ok, thanks.  Here's a screenshot from during when it was running to a near halt (took me a while even to take the screenshot):
    Here's a second screenshot after restart.  All I did was open Chrome to post this:
    At this exact moment I have about 500MB of memory free, but I have been watching it slowly count down starting from 2GB free when I first restarted.  So far it is running smoothly, but I am guessing that it will start to lag again once the free memory dials down.
    In case there is any correlation:  I happened to have a strange issue with my internet connection.  My router seems to be working fine, and I have wi-fi connected around the house.  However, I did have my iMac connected via ethernet cable, and the wired connection was not working (was not finding a DNS address), but when I go to Wi-fi, it works.  Again, could be totally unrelated, but it started just before the slowdown.

  • IMac fan issue

    My late 2013 model iMac has just started with an issue of the fan running at full speed on start up and taking up to 90minutes to slow down to normal silent ops.  The air coming out is cool, no sign of overeating or CPU spiking etc.  I tried resetting SMC, no impact.  I ran apple diagnostics and it said possible issue with fans code PPF004 and possibly PPF003.  I called apple support who rather unhelpfully had to be told what apple diagnostics was but then told me to take it into my nearest store for them to look at.  Does it sound likely to be a hardware issue or is there an easy fix for those codes that mean I could avoid taking it in?  My iMac is whisper quiet as I type this!  Many thanks

    I have an iMac early 2009. Had it for about 6 months. I took it to the Apple Store to get my SuperDrive repaired. After bringing it home and plugging it in, I noticed the fans were gushing at full speed although I had no apps or programs running.
    IT WOULDN'T STOP!!! I started to get ****. Went hunting online for solutions. Tried the SMC method, unplugging and re-plugging. Tried every outlet in the house. Nothing worked! This apparently is a major issue with a lot of mac users. I couldn't fix this myself.
    The next morning I took it back into the Apple Store. The technician plugged it in with their power cable and mine and the problem wasn't fixed. He took it in the back and came back out and.....
    SUCCESS!!!!!!!!!!!!!!!!!!!!!!!!
    Apparently the heat sensor was lose!!!!!!!! He didn't even have to keep my MAChine. He tightened it back into position in like 10 minutes in the store and voila: PEACE AND QUIET!
    To a lot of folks this is a major headache. Because the fans are so loud you can't even hear yourself think. Just thought I'd share my success story. Hopefully my fans don't start blaring unnecessarily anymore.

  • IMac display issues: black icons and folders, doubled up files in finder windows, programs won't update

    HELP!
    I'm hoping someone can help with my iMac 27" purchased in 2010.  From a previous discussion I started a year ago, I have had virtually nothing but trouble with it.  After the internal hard drive crashing, I was able to install OS X on an external drive and used it for a good 8 months to drive my iMac and I took it to an expert who has replaced it with a 3tb HDD, but at some point the display has gone crazy.  I am not certain if it is hardware, i.e. graphics card or video but I'll describe the symptoms and add some pics to see if anyone has seen this before and knows what the problem may be.
    1.     90% of the screen was covered with white with just a portion of the desktop showing through.
            (This happened when I tried to reinstall OS X on the old HDD and the new one, but didn't happen when using OS X install disc)
    2.     Files, folders, photos and some icons on the dock go black
    3.     Files and photos double up when in Finder.  When I'm viewing photos, it shows them but all the previous panes and the photos are jumbled behind the
            photos.
    4.     Anything I open in Preview is completely black, but ColourSync Utility opens everything fine.
    5.     Programs won't update.  They will download onto my iMac but won't update.  Some say, because I don't have OS X 10.6.8 others just won't open.
            Including Google Chrome, opens with two tabs open but when I open a third tab the rainbow wheel just turns.  Skype won't open just gives a failure
            report.
    6.     10.6.8 Update Combo downloads but when I restart the screen is covered in white - as in 1. and I have to reinstall OS X 10.6.2 to get the screen to               clear but then all the above problems continue.
    7.     Sometimes videos don't display in Youtube, or the entire page other than the video player is covered in rainbow lines.
    8.     Some buttons are blacked out on selection pages, i.e. system preferences, or saving screens
    9.     Photos opened in FB go upside down and flicker all over the page as my mouse runs over them.
    10.   Photos won't upload into internet editing programs.
    I can't find anyone who has had the same issue in all of the discussions I've looked at, but it sounds like I have a video problem, but I wondered if it might be a software problem with flash or something.  Or I have something malicious on my computer.
    I also have an iphone 5 that faulted with the iTunes and USB icons and won't fix after trying one of those R-Sims, and I wondered if somewhere along the line it may have even had a virus/trojan/malware that has infected my external drive and then my internal drive.  A reason I have thought that is because I have used my daughter's MacPro laptop and plugged in my external drive and I noticed the windows in hers were starting to do the same thing.
    And on top of all that, my fans didn't work for over a year and I had to place an external fan at the back of the computer or it would overheat and shut down, but after resetting the SMU it started working again, but it is very noisy. I have tried to download SMC Fan Control and although it downloads to the HDD, it won't open.
    Sorry its such a long post, I do hope with all of this information someone can help me.
    Thanks so much.

    HI and Welcome to Apple Discussions...
    *Soon after, I installed Quake Wars, L4D 1, 2, Mass Effect 2, Need For Speed: Undercover, Mozilla Firefox and *Sophos Enterprise AV*. Approximately a week after installation, I began to experience malfunctions varying greatly*
    Macs get grumpy when running anti virus software. Disable or completely uninstall Sophos A/V and see if that makes a difference. A/V software on a Mac will slow the drive down more and more as time goes on.
    Also, check the vendor sites for each 3rd party software you installed to make sure they are compatible with 10.6.x
    The "hard reboots" are a result of the system freezing due to incompatible or outdated software.
    Carolyn
    Message was edited by: Carolyn Samit

  • I am quite fed up with Apple and my iMac - multiple issues

    I've been a Windows user for years. I've suffered through all of the ups and downs of Windows over the years, mostly the downs. I have three Windows 7 computers, and quite frankly, both have performed quite beautifully, albeit without the polish of the Mac.
    Earlier this year, I decided to buy an iMac for a few reasons. First, they are just so beautiful, and even if you are going to run Windows they are probably the best Windows computers out there. Second, I wanted to do more video editing and found the Windows tools weren't very good. I also wanted to run some karaoke software (kJams) that at the time was not available for Windows.
    I was basically pleased with the iMac for a few months. However, there was one problem I could never solve: the wifi connection got lost periodically, even though I had made all of the system updates. I know this is a problem with the iMac, because my numerous Windows PCs and my two iPod toouches had no problem with a wifi connection. It appears from various posts here that this is indeed a problem many others have experienced since Snow Leopard's release, and as far as I can tell, despite many updates to the Airport software it has never been fixed by Apple. Strike 1.
    A couple of weeks ago, my iMac started running slow for no reason I could identify. I don't have a lot of software installed on it, I didn't download anything pirated or questionable. I did install bootcamp according to Apple's instructions, and it worked fine (I wanted to run some Windows games). I tried doing all of the things that folks suggest when your computer is running slow - repairing permissions, running Onyx, etc. None of them seemed to do anything. I tried creating a new user, it had the same problem. I also noticed various other problems with the computer: it was slow to recognize a USB hard drive (and sometimes didn't recognize it at all), external hard drives would not appear in the time machine set up, and various other problems I can't quite recall. Overall, while presumably nothing serious should have been wrong with my computer, I decided I probably should simply reinstall OS X. Strike 2.
    Now, quite frankly I would have been happy to simply reset the computer to its factory state. I would point out that nearly all Windows PCs come with a separate repair partition where it is very easy to do that with one click. I guess Apple is so confident in the reliability of its computers it doesn't think this is a useful feature. So, I had to install OS X using the DVD that came with the computer. It took quite a while to do this, and actually it wasn't at all clear to me that my settings would be kept (one would think that this is something the install screen would point out - Windows makes a quite clear distinction between a "clean install" and a re-install).
    I was somewhat pleased when all of my settings were there. After the long process of reinstalling, I click on the "Accounts" setting I get a message saying that the Preferences application has quit unexpectedly -- clearly there are still problems. Quite irritating given that I just spent an hour trying to re-install the OS. I google around and again find others have had this problem, but unfortunately none of the proposed fixes I try seem to work. And my computer still seems to have other problems - it still doesn't recognize external drives very well. I will say that it seemed to be running a little faster though. Strike 3.
    Anyway, I decide I need to do a full clean install. When I do that, things seem to be working better, although the mouse pointer is quite jerky - I'm thinking that maybe I need to just run software update to fix that. I start the software update - a nice 1gb download is required. Now ,the problem is that I STILL HAVE THE PROBLEM WITH WIFI DISCONNECTIONS. So no matter how many times I start the download, I CAN"T FINISH IT. And Apple, in its infinite wisdom, HAS NOT WRITTEN A DOWNLOADER THAT IS SMART ENOUGH TO CONTINUE WHERE IT LEFT OFF. How hard is this to do, really? Do I now have to lug my iMac across the house to put it on a wired connection? I've already wasted hours trying to get this piece of junk working.
    And the sad fact is, once I am done, I will have a very beautiful computer that can't hold an internet connection.
    I have to give Apple kudos for the iMac hardware. It's great. But the software? It's fine as long as it works. But it doesn't always work - and when it doesn't, it actually at this point seems more buggy and difficult to repair than Windows. Is this the last Mac I'll ever buy? Probably. Quite frankly, it's hard to avoid the conclusion that Apple's best developers have moved on to more exciting pastures (iPhone for example). And given the number of unsolved issues posted on these forums (including the ones I mention here), it appears that Apple engineers are simply asleep at the switch.

    Let me start by saying I don't use wireless so I haven't had to deal with it, and I assume you know your way around all the settings in your modem/switch and Windows 7.
    http://www.google.com/search?sourceid=navclient&q=Applewifi+signaldrops
    Google turned up a 43 page thread, going on for a year, not very encouraging.
    a href=http://discussions.info.apple.com/thread.jspa?threadID=2142725&tstart=0&me ssageID=12175855#12175855> Dropping Wi FI Signal
    Well for weeks (months?) now, since two or three weeks maybe after 10.6.4 was released, I did not have dropped wifi until today. What is different? I applied the latest security patch less than 24 hours ago.
    http://support.apple.com/kb/DL1094
    Safari and DNS:
    http://discussions.apple.com/thread.jspa?threadID=2227251
    http://reviews.cnet.com/8301-13727_7-20016549-263.html
    Airport:
    http://reviews.cnet.com/8301-13727_7-20012462-263.html
    Joining an encrypted wireless network
    When logged in, then AirPort menu bar icon shows the approximate strength of your wireless network signal. All four signal bars darkened means you have very good throughput. If you don't see this menu bar icon, enable it in AirPort preferences. http://support.apple.com/kb/HT1126
    If you can focus on networking, there are some excellent people that hang out there.
    http://discussions.apple.com/forum.jspa?forumID=1343
    If you bought your iMac this year then it likely came with 10.6.3 and shouldn't have a whole lot of updates, outside of iTunes and Safari etc.
    iMac Networking Discussion?
    http://discussions.apple.com/forum.jspa?forumID=1111
    Support, tutorials, how to, etc:
    http://www.apple.com/support/imac/intel/
    Potential sources for interference with wireless
    http://support.apple.com/kb/HT1365
    Bluetooth: If your computer stops recognizing your Apple wireless mouse or wireless trackpad, simply click the mouse button or trackpad surface to get it working again. http://support.apple.com/kb/TS3048
    And, sometimes just knowing what make of networking equipment (linksys, netgear, d-link, even Apple). USB ADSL or a USB wireless devices don't work with Macs. Checked for firmware update for the network devices?
    Changing from WEP to WPA
    How do I change from WEP to WPA security, which I have been told is better. I'm sure it is simple but i cant find it.
    These settings are in your wireless router, so you will have to consult the manual for how to access the administration page and change the wireless security settings. Once you have WPA or WPA2 enabled, you will need to reauthenticate your computer with the wireless network since you will have a new password. If you have problems with persistent password requests popping up, you will need to open the "Keychain Access" utility and remove all keychain entries associated with your wireless network and password.
    http://reviews.cnet.com/8301-13727_7-20014188-263.html
    Networking In networking utilities, the in-depth network troubleshooting and monitoring utility VisualRoute ($49.95) has been updated to fix a bug with the "whois" routine, and likewise the Wi-Fi hot spot finder AirRadar ($19.95) has also been updated with a small bug fix for the signal status not updating.
    The network administration and security testing utility NetScan (free) has also been updated and now has a revamped interface and new features for port scanning as well as fixes for icon appearance and update-checking problems.
    http://reviews.cnet.com/8301-13727_7-20013211-263.html
    As for restore, it is different, won't be the same, but there are two ways to handle that on a Mac:
    Apple TimeMachine
    Clone OS X: bootable (yes, you can boot from 2nd or 3rd hard drive) - SuperDuper ($29) is superb and I update the backup (15 minutes) before applying updates.
    That way I have my previous system with all data, not just an image, all my data and going back in time.
    From another thread:
    if you have issues when using an AirPort router, you've either got interference issues causing your problems or a system issue.
    whenever possible:
    1) Vist an Apple Store
    2) Try your machine on their network
    3) If the connection drops, make them fix it.
    Reason being, I've tried and checked log after log and have never seen a connection drop inside an Apple Store.
    My gut reaction would be interference but the easiest move may be to check it in an Apple Store if at all possible.
    http://discussions.apple.com/thread.jspa?threadID=2142725&start=225&tstart=0
    If you connect to the Internet or a network in several different ways (using AirPort or Ethernet, for example), you can change the order of the network port configurations your computer tries when connecting to the Internet or a network.
    To change the priority of a network port configuration:
    1) Choose Apple menu > System Preferences, and then click Network.
    2) Choose Set Service Order from the Actions pop-up menu.
    3) Drag a service, such as Ethernet, to the top of the list. When you try to connect, Mac OS X will try the port configuration at the top of the list.©
    Tip: Any Network Device listed here that you'll never use for a Network Connection should be set to 'Inactive'.

  • Imac CPU Usage insane, Freezing regularly, is the end nigh for my mac?

    Hi, i wonder if anyone can help?
    My imac is not happy at all, it is freezing all the time even when opening the dock and changing font sizes etc! It can't cope with having more than 2 applications open at once.
    When i look in activity monitor, it is always pushed to as near 100% as possible, mostly only for one application such as today Safari is taking 92% CPU and the fans are whirring away like mad.
    I think my computer may be dying, i'm not sure bit i want to try and prolong its life until i can afford another.
    I have a full backup on external just in case.
    Have run tech tool pro and disk utility and all looks fine - though keep getting told there is an 'allocation overlap' by tech tool pro.
    Any suggestions would be so helpful,
    Look forward to your responses

    Since you have a full backup, performing an Archive and Install should clear the problem up. If you have Disk Warrior, try to rebuild your Directory before the A&I. However, TTP does give false readings, and since DU says thinks are OK, I would try t DW rebuild first. If you don't have DW, just do the A&I.

  • IMac startup issues

    Hi,
    I have read through various similar issues but am having trouble diagnosing my exact problem. My iMac starts up but gets stuck on the apple logo with the spinning gear.
    I can get into disk utility and when i verify/ repair the disk, no issues are apparent. I cannot do a start-up using the C key. I have a Windows bootcamp parttion which will not load either (black screen after the progress bar - 10 mins and counting). I have reinstalled the OS and restored using a time machine backup. Also safe boot takes me to the Apple logo again.
    One time i managed to get a progress bar on the Apple loading screen but it didn't seem to move from about 5-10%.
    Is it likely the hard drive is damaged?
    Thanks,
    Martyn

    Martyn,
    Apple is very specific about troubleshooting this, please carefully read and methodically follow the troubleshooting steps in http://support.apple.com/kb/ts2570

Maybe you are looking for