Buzzing and locked up imac

Our imac started buzzing and locked up. The only way to shut it down was to unplug it. After restarting, it seems to be ok. Any thoughts?

Sounds like maybe your disk drive is going bad. Try running AHT on the install DVD for you Mac to check it out.
Allan

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MyBook freezes and locks up iMac

Hello. My external HD (MyBook connected via USB 2.0) is freezing and locks up my iMac. I get the pinwheel and it requires a hard reboot -- not ideal. It seems to happen after waking from sleep. Any reason why this is happening and ideas on how it can be fixed?
Message was edited by: EnergonCube

JAS hello,
sounds like you may have some file issues that need
addressing....
Shut down and restart your computer with the Command
key and the letter 's' depressed.
At the prompt type or copy and paste (don't forget
the space)
/sbin/fsck -fy
hit return key and wait for all clear to be displayed
then type.
reboot
hit return key
Check the pemissions are set
correct on the Apple installed software...
use 'Disk Utility' from Applications > Utilities >
select HD... select 1st aid. repair permissions...
if repairs are needed run again until none are
repaired... do not worry about messages 'we are
using special permissions etc... they are OK Quit
when finished.
Use
BatChmod to set correct permissions on your home
~ Music folder
This compact GUI will perform the same tasks as a
'terminal command line'
drag the complete Music folder with libraries
and iTunes Music folder inside to the BatChmod Icon
and drop....
check path is correct.... tick if not already....
Owner=R W X, Group=R, Others=R,
then tick 'Apply ownership and privileges' tick
'Unlock" ... click Apply...
provide password... all done very quick...
come back and let me know how it all goes now ... TP
iMac 800MHz PowerPC G4
17 Flat Screen. G4 iBook. Mac OS X (10.4.3)
TP:
I got everything done except the BatCHmod. I'm not familiar with this command and I don't know where the icon is - please provide more specific information.
Thanks,
JAS

External USB ejects and locks up iMac

I have a 27" Core i5 iMAC. Brand new machine that runs great. I am trying to transfer over my data from my PC to my new iMAC. The PC data is on several external UISB drives that are formatted NTFS. I have downloaded and installed the trial version of Paragon NTFS for Mac. When I connect the external drives, the iMAC sees them and their disk images show on the desktop. But then the drive spontaneously ejects, or the system locks up (requiring a hard reboot), or both.
Any ideas? Any logs to capture? I am very now to the Mac world and aren't exactly sure where to start troubleshooting this issue.
Thanks,
Neal

Check the power supply and cables to the Dock and try a different USB port on the back of the iMac.
Also note: that you should not need third party NTFS software to read the Hard Drives, it is however required if you plan the write to them.
Sharing drives | Utilities - Page 1 | Macworld
Personally if I found that the Dock wasn't playing well with the iMac, I might pick up a decent USB or FireWire External Hard Drive and while it is formatted "MS-DOS/FAT-32" transfer my data from the PC to the iMac and then reformat it "GUID Partition Table/Mac OS Extended" to use as a permanent backup drive for the iMac.
For references see:
Switch 101: Migrate your Windows files or system to your Mac
and
The no-worry backup plan | Business Center | Working Mac | Macworld
Dennis

My iMac locks up constantly in email. I click on one or two emails. Then when I click on another email, I get the spinning wheel and have to relaunch. Why does it get confused and lock up?

My iMac locks up constantly in email. I click on one or two emails. Then when I click on another email, I get the spinning wheel and have to relaunch. Why does it get confused and lock up? Seems like it is stuck.

10.6.8 here, MacBook Pro. Comcast. Mail freeze ups. Occasional warnings to use "Log Out" under the Apple icon.
Disk Repair run several times. Shows lots of Java "remote" issues.
I run Disk Repair several times, shows a lot of Java, "remote" issues.
Restart don't know if it helps, I do it all the time. What's with quitting Mail but it doesn't quit, and why a separate maneuver to "Log Out".
i

I am trying to connect my new iMac to my Buffalo router. I forgot my router password, so I reset it and it is working. I can't figure out how to reset my router password and lock it on my iMac.

I am connecting my new iMac to my Buffalo router. I forgot my router password so I pushed the reset button and my computer was able to connect. The problem is, I can't figure out how to set my new password and lock the router. I went to the Buffalo website and downloaded the CD, as I can't find that either. I can't open any of it because it says it is Windows and can't open it. I am new to Apple!

kellyfromdanville wrote:
I am new to Apple!
Ah, new to routers too.
Perhaps it's best to have a local computer support person come set you up?
To explain everything would require writing a book here.
But this is what you want basically.
Router, new Wireless N, firmware updated.
1: Two accounts, one admin, one guest Internet access. Random +30 plus character lenght passwords each preferred.
(guest password to max password length of any iDevices)
2: Encryption: WPA2 AES. No Ping. No remote access. No MAC filtering. Visible.
3: Guest access on devices and computers only. Passwords written down and stored.
4: OpenDNS preferred but not mandatory.
If you get OpenDNS, you can log into their website for free and set parental controls on things like inappropriate sites for children. So whatever device is used on your network can't access a large portion of those sites (nothing is perfect) by most users who are not technical oriented.
What your doing now is running the bare bones unsecure router which can be used harmfully against you.
Even a Apple Airport router has to be very well secured. The defautl cd and out of the box setup is not a secure solution.

My iMac started and locked onto a white screen. Rebooted and all was well. How do you do a safe start i.e. what key do you press?

My iMac started and locked onto a white screen. Rebooted and all was well. How do you do a safe start i.e. what key do you press?

It should according to http://support.apple.com/kb/ht1455. Review that and try again.

Hi am running OSX 10.8.2 as first time convert to apple iMac pc but skype for Mac just freezes and locks out my iMac, any answers please?

Hi, am trying to use skype for mac on my iMac ver 10.8.2, downloaded from cnet on the internet but sype freezes and locks out the PC, yech!
dont want to use facetime as our kids in Oz & N.Z. dont have Mac's. any help please?!

Have you tried re-installing, downloading it directly from Skype?
http://www.skype.com/intl/en/get-skype/

Please help! Major problems (performance and lock-ups) with brand new W520 with Intel 520 SSD

My company primarily uses HP machines but I've been a long time IBM (now Lenovo) fan so I recently had IT purchase me a new Lenovo W520 (product ID 42763LU).
Once the machine arrived I had them do the following:
Remove the 500GB HDD and replace it with an Intel 520 series 240GB SSD
Remove the optical drive and install the 500GB hard drive that came with the machine in the optical bay (with the bay adapter of course)
Format both drives and put a preconfigured windows 7 64-bit image on the SSD
A general summary of the system is the following:
Intel i7-2860QM CPU
8GB RAM
NVIDIA Quadro 1000M
Intel 520 240GB SSD (primary HDD) [SSDSC2CW240A3]
Hitachi 500GB HDD (optical bay) [HTS727550A9E365]
Intel Advanced-N 6205 network adapter
TouchChip Fingerprint Scanner
The machine was a few days delayed getting to me due to "hard drive driver issues" (that's what I was told). When I received the machine I immediately noticed that it was much slower than I expected (I have a custom built i5 HTPC at home running windows 7 on a Crucial SATA III SSD that I was comparing it to) and I was experiencing frequent hangs (ranging from 30 seconds to multiple minutes), super long boot times, general “slowness” at times, and occasional lock-ups. Since our "baseline" laptop here at work is the "equivalent" HP workstation my IT guys have been less than helpful in helping me to solve this issue. Being reasonably computer savvy I decided to try to try to fix the issue myself. I performed the following “troubleshooting” steps:
1. One of the first issues (errors) I noticed in the event viewer was errors related to the optical drive. Clearly the image they installed on the machine was not from a machine with the same hardware configuration. So, I decided to just wipe the machine and perform a fresh install of windows 7 from the disks (well, USB). After spending multiple days installing windows, performing updates, making sure all the drivers were current, and installing only the critical software I need, I was disappointed to realize that although I fixed the optical drive errors the machine was still slow, was hanging, and locking up regularly.
2. Removed the cover on the machine and removed/reinstalled the drive to verify it was secure.Everything looked good.
3. Verified the latest firmware is installed on all my Intel hardware. Everything seemed up to date.
4. I performed a number of troubleshooting steps like booting the machine with/without the battery, with/without the HDD in the optical bay, installed/removed from the docking station, etc. and none of these things helped (also a note – occasionally when running on the battery I was hearing a strange “buzz” or “static” sound coming from the area around the SSD).
5. Next I did some internet research and learned quite a few things. First, it sounds like others have had similar problems with this machine and/or SSD combo and there were quite a few options suggested to “fix” these issues. The general consensus for troubleshooting steps were:
5.1. Download and install the latest Intel chipset drivers and AHCI controller drivers (overwriting whatever windows installs during updates).This didn’t fix anything.
5.2. Turn off PCI express link state power management in the power manager. This didn’t fix anything.
5.3. Disable superfetch, prefetch, indexing, defragmentation, page file, system restore, and hibernate. A few of these were already disabled by windows so in those cases I just verified they were disabled in the services and application editor. These things may have slightly increased performance but did not fix the major hang/lockup issues I was having.
5.4. I followed online steps to edit the registry to disable the PCI link power management by adding ports, adding the required variables, and setting them all to 0. This did seem to have fixed the hangs and/or lock-ups but the machine is still much slower than I would expect (boot times are still pretty slow and it does “stutter” when I’m doing more than one thing at a time. Also a note here – I have the Intel SSD toolbox installed and I noticed that it was giving me a warning for DIPM not being optimized. I made the mistake of clicking “Tune!” and then started having the hang/lock-up issues again. I went back into the registry and sure enough the PCI link power management variables for ports 0 and 1 were set back to 1. I set them back to 0 and the hangs have gone away. I will not be “tuning” the DIPM through the Intel SSD toolbox again…
6. I also fixed a couple of other minor errors I was seeing in the event viewer by disabling benign services and/or making slight timeout modifications (I researched each issue on the internet to verify they were benign before I implemented any changes). These fixes didn't seem to do anything other than make some of the errors/warnings go away. So, the list of errors/warnings has become much smaller but I’m still getting the following (maybe an issue, maybe not?):
Event ID 37 for every processor saying that they are in a reduced performance state for xx seconds since the last report
Event ID 10002 - WLAN Extensibility Module has stopped
Event ID 4001 - WLAN AutoConfig service has successfully stopped
Event ID 27 – Intel® 82579LM Gigabit Network Connection link is disconnected
I suspect the WLAN errors have something to do with windows fighting with the Lenovo access connection tools?
7. Since the machine still seemed slow I downloaded the program AS SSD and checked the performance of the SSD. When I compared my performance numbers to the benchmark numbers I found onlineI was very surprised to discover that I’m getting about 50% of the performance that I should (values below are read/write).
Seq: 262.11 / 188.32 (s/b 504.58 / 298.28) [MB/s]
4K: 15.83 / 44.92 (s/b 21.70 / 62.60) [MB/s]
4K-64Thrd: 165.23 / 154.46 (s/b 241.38 / 234.08) [MB/s]
Acc.time: 0.218 / 0.294 (s/b .0186 / 0.208) [ms]
Score: 207 / 208 (s/b 314 / 327)
Overall Score: 533 (s/b 797)
One more note - it seems like my cooling fan is running at a high speed almost all of the time. This is probably one of my power settings (I think I have it set for max performance) but it's even doing this when there is no load (i.e. I'm using IE and just vieweing webpages - like right now).
So, I apologize for such a long post but I’ve spent countless hours researching and troubleshooting this problem and haven’t been able to figure out what the heck is wrong here. Am I missing something simple or do you guys think I have a SSD and/or problem with the machine itself? To say that any and all help would be greatly appreciated would be a massive understatement – I’m on the verge of pulling my hair out and I really need this machine working as quickly as possible!
Please let me know if you have any suggestions and/or need additional information. Thanks in advance for your help!
-Erik

Lol gotcha about the drive as an option. I didn't go SSD with mine. Do you have the latest firmware on your drive? It is supposed to be v1.97. Just checking (ah and I see item 3 so guess so). Do you have the SSD drive toolbox software installed?
http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Solid+State+Drives+and+Cach...)
Seems some useful tools are in there. I can't say much beyond that with the drive. Oh. Why does your fan always run at high speed? Can you describe that? I mean, are we troubleshooting the right kind of issue? Is there anything else going on with your system? I saw about the reduced core speeds message. what are your system loads like? Anything causing high cpu utilization? Could be something other than the drive causing your low numbers and lockups.

How do I close the white box with a keyhole, gear, and lock that sometimes randomly pops up in the upper left of my screen?

Every now and then, a weird white box with a keyhole, gear, and lock pops up in the upper left of my screen. I can't seem to close it or move it, and when I try to use another application, it stays there and blocks features. The only way I've found to make it go away is by force closing Firefox.Why does it pop up and how do I close it? I'm on an iMac, Snow Leopard. Have the latest version of Firefox, 10.0.2.
Here's a screenshot of the box: http://img11.imageshack.us/img11/6819/screenshot20120302at821.png

Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Can I lock a iMac using iCloud if someone sign outs from iCloud?

Hi everyone,
I just wanted to make some tests on my iMac. I activated "Find My Mac" through iCloud. When I am signing out from iCloud (Control panel on OSX's system preference) iCloud.com is showing no device to track. Also, if I change account on iCloud the device cannot be tracked.
My question is;
If my iMac gets stolen and if the theif sign out from iCloud or change iCloud account can I still track or remote lock the iMac?

razibhasan wrote:
If my iMac gets stolen and if the theif sign out from iCloud or change iCloud account can I still track or remote lock the iMac?
No. The Mac/device has to have had the 'Find My...' app enabled, and thus be signed in, be on, not wiped, and able to connect to a network.

HT4628 No matter what I do after selecting my network, when I put the computer to sleep it reopens saying that no network is selected. I have applied the appropriate network and locked the selection as well as restarted the computer (a windows habit).

I cannot get this imac to save selected newtwork preference (tried apply and locking the selection to no avail). My other imac maintains the selection without a problem using the same airport. The connection works immediately after re-selecting the network from a list of "neighborhood" networks that I have never used. But once I "sleep" the mac, the dialog states: no network selected.

I cannot get this imac to save selected newtwork preference (tried apply and locking the selection to no avail). My other imac maintains the selection without a problem using the same airport. The connection works immediately after re-selecting the network from a list of "neighborhood" networks that I have never used. But once I "sleep" the mac, the dialog states: no network selected.

External speaker buzzing and/or humming?

I have a mid-2012 macbook pro 13.
Whenever it is plugged into external speakers via the 3.5mm jack, a loud humming or buzzing is emitted from the external speakers. When music is being played through these speakers, the humming is less noticable but still present in the background.
Is there any way to fix or reduce this and what is the cause?

With this kind of question I would often do a web search for the system specifications myself to see if those provide a hint, but you have not posted exact model types for your computer or the Bose system and searching for "iMac" specifications will cover about 30 models. This model Bose has audio input but I have no idea if that's what you have.
http://www.bose.com/controller?url=/shop_online/digital_music_systems/sounddock_ systems/sounddock/index.jsp
Since it seems you have determined the sound out is working for the iMac through the speaker socket it sounds more likely it is the cable or something with the Bose unit. You might wish to approach Bose support with this information.

Crashes and Lock-ups

I have been experiencing crashes and lock-ups in Premiere CS4.
Last week I was running Encore to burn a DVD and when I noticed the processor was running flat out. I decided to run Core Temp to check the temperatures. At that point my encoding stopped and Encore locked up.
Now I usually have Core Temp start when I load Windows. I have now disabled it and when I ran Premiere last night guess what? No lock-ups. Now this is early days but I suspect Core Temp might be the problem. I hope so. I'll report back with my findings when I have had more time to experiment.
PS I'm running Windows XP SP3, Quad Core 6600 and 4Gb RAM
Cheers,
Tim

You posted near the end of a similar thread in the CS5 forum. I branched your post into a new topic and moved it here to this forum. My post #1 was a request to be more careful where you post.
If you want to see where you originally posted, click on the word "thread" in the phrase "Branched from an earlier thread", located at the top of the post list.
-Jeff

Overheating and Lock ups with MSI TI4200 128DDR

This card seems to overheat and lock up during game play.
Does anyone have a solution?
My system:
P4 1.8Ghz 512K
Intel D845WNL
512 Mb PC133
SB Live 5.1
MSI TI4200 128DDR
WIN 98SE
300W PSU in a standard P4 case
No overclocking
Currently I play games with the case open and an external fan blowing into it.
This as fixed the problem.
I looking for a permanent solution.
Should I get a better PSU?
...or should I just get an ATI 9700 Pro

From what you said your PSU is handling the load but having a dual fan PSU will help temps by maybe a degree or two.
You may not have adequate ventilation and need to ad some fans to your case but that may be the straw that breaks the camels back if you are on the edge as far as adequate power is concerned.
There are quite a few folks that run with the side covers off but you have to keep in mind the ambient temperature where the PC is being used in any case.
So far my experience with GF4 cards is they inherently run hot and can raise the temp in your case several degrees. Nature of the beast.
Bottom line, better cooling and airflow is paramount and take a look at the heatsink, it may have been mounted poorly...this happens with any manufacturer at times and I usually re-mount it with a thermal paste of my preference. Keep in mind you will probably void your warranty with the manufacturer should you need to return or RMA the product.

Screen problems - black screen and lock-up (plus HDMI issues)

Hi, I'm not sure if these are related to the same fundamental issue, but they are both serious problems that need resolution.
I have a new mid-2012 MBPretina. I am on all the latest updates (10.8.2).
The first problem is the most recent, and the most serious problem. Since I updated the Java a couple of days ago I've been experiencing random black screens and lock-ups. Essentially, what happens is that sometimes when I perform an action (opening an app, clicking a link on a webpage, performing other kinds of in-app actions, etc.) the computer screen will go black. About half the time I can, through my own memory, try keyboard combinations to quit or force quit the most recently used app (the one where the action was just performed), and I will get some glimpse of the underlying apps, while the menubar and other areas will remain black until I move a window on top of the black space. Sometimes no key combinations work and I am forced to perform a hard restart with the power button. This is a serious issue, obviously, since I will lose current work/progress in my apps. I'm not sure if this is because of the new Java update, or has to do with something else, but it started happening shortly thereafter, over the last 2 days. I work most of my waking day on my laptop, and this "black screen of death" has happened about 5 or 6 times a day.
The second problem I have been experiencing since I starting using my MBPr with external HDMI displays in August/September. The problem is that I will plug the MBPr into an HDMI display, the screen will temporaliy go black, and then bring me to the login screen (as if it's crashing, albeit softly). This happens about 1 out of 4 times nowadays.
How can I fix these problems, especially the first?

UPDATE:
Clearly there's a problem because a third of the way through a clean reinstallation from scratch it black screened again. Hmmmm.
Now this is not good. Problem is I can't rule out potential updates from Apple that might have caused this either.
The search for solutions continues.

Buzzing and locked up imac

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