Imac asking to be shut down and restarted, then does it again???

My computer all of a sudden starts telling me to press the power button to shut down and then to restart again. Also "Finder" not working once computer started up as well as safari just disapearing. Ran a hardware test and got harware " detect error 4MEM/9/40000000:0xa908b918" error message
Just realized its been 1 year and didn't buy apple care : (
Can someone please tell me what this means??

Hi acj1978
Welcome to Apple Discussions
Sure sounds like a Kernel Panic do to a bad, incompatible or a partially dislodged RAM module.
*If you have just recently upgraded the RAM:*
1. Check to be sure that all the modules are in spec and full seated in there slots.
2. Go back to using only the original modules that came in the iMac.
*If you only have the factory RAM and not upgraded:*
1. Check to be sure that both modules are fully seated.
2. Try the modules one at a time to see if it will boot on either one.
When installing or upgrading RAM you have to push real hard on each module with both thumbs to fully seat them in the slots. For assistance, see > http://support.apple.com/kb/HT3918
For replacement RAM, see > http://eshop.macsales.com/shop/apple/memory/iMac
If you are not comfortable working in the RAM bay yourself, take it to your Local Apple Store or Apple Service Provider and have them check it out.
Dennis

Similar Messages

IMac (Oct 2009) keeps shutting down and restarting when not being used.

At least once a day, usually when not being used, I will see a dialog box that say computer had to restart due to a problem. data in problem report does not clearly state problem - many multi-page entries
Have reinstalled OS 10.8.2 once
this morning tried to restart with safe boot and had spinning beach ball for more than 15 minutes. shut down and restarted nin recovery mode. verified and repaired permissions (all seem to be related to Canon Pronter plug-ins- had an error message yesteday asking if I wanted to repair printer software and I said yes). Printer seems to be working. Had one statement that indicated a screensaver issue-see below
a while back, iTunes album art screensaver hung up with just two album covers flipping in all rows and columns.
after a few restarts, it started working correctly again..- yesterday I set screen saver to never, but still had a crash this morning

Here's the latest panic report. BTW, I ran for a while from an external system boot - very sloww (thumbdrive), but nothing happened. However, when I retarted I tried to restart in Safe Mode and the launch never completed (30 minutes without start)
Tue Jan 1 07:15:40 2013
panic(cpu 0 caller 0xffffff8002443908): "zalloc: \"buf.8192\" (878 elements) retry fail 3, kfree_nop_count: 0"@/SourceCache/xnu/xnu-2050.18.24/osfmk/kern/zalloc.c:1826
Backtrace (CPU 0), Frame : Return Address
0xffffff800aafb2b0 : 0xffffff800241d626
0xffffff800aafb320 : 0xffffff8002443908
0xffffff800aafb400 : 0xffffff80024de8d8
0xffffff800aafb450 : 0xffffff80024de395
0xffffff800aafb500 : 0xffffff80024dd64b
0xffffff800aafb530 : 0xffffff80024dd7f7
0xffffff800aafb550 : 0xffffff80026e7766
0xffffff800aafb5c0 : 0xffffff800272024c
0xffffff800aafb5e0 : 0xffffff8002721314
0xffffff800aafb680 : 0xffffff800271d2a0
0xffffff800aafb790 : 0xffffff800271959c
0xffffff800aafb840 : 0xffffff800271936a
0xffffff800aafb8c0 : 0xffffff80025137df
0xffffff800aafb910 : 0xffffff8002509fe1
0xffffff800aafb950 : 0xffffff800252685c
0xffffff800aafba00 : 0xffffff8002526679
0xffffff800aafba30 : 0xffffff8002712518
0xffffff800aafbaa0 : 0xffffff8002511c46
0xffffff800aafbae0 : 0xffffff800250936c
0xffffff800aafbb90 : 0xffffff80024fbb49
0xffffff800aafbc40 : 0xffffff80024fc314
0xffffff800aafbf50 : 0xffffff80027e182a
0xffffff800aafbfb0 : 0xffffff80024ced33
BSD process name corresponding to current thread: mdworker
Mac OS version:
12C60
Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64
Kernel slide:     0x0000000002200000
Kernel text base: 0xffffff8002400000
System model name: iMac10,1 (Mac-F2268DC8)
System uptime in nanoseconds: 39390380895329
vm objects:17562048
vm object hash entri:2264400
VM map entries:6216720
pv_list:19034112
vm pages:74043792
kalloc.32:1826816
kalloc.64:170766336
kalloc.128:649785344
kalloc.256:648183808
kalloc.512:2285568
kalloc.1024:2637824
kalloc.4096:2387968
kalloc.8192:3989504
ipc ports:2168672
threads:1166880
vnodes:16507128
namecache:6952320
HFS node:21840864
HFS fork:6352896
decmpfs_cnode:2244312
buf.8192:7192576
ubc_info zone:3559464
vnode pager structur:1978800
Kernel Stacks:1982464
PageTables:44011520
Kalloc.Large:12347186
Backtrace suspected of leaking: (outstanding bytes: 236544)
0xffffff80024435b9
0xffffff80024245ed
0xffffff80027ee1bd
0xffffff80028507f7
0xffffff800285075b
0xffffff7f82b6b1ac
0xffffff7f82b72922
0xffffff7f82ab138b
0xffffff7f82ab49b0
0xffffff7f829f843c
0xffffff800243dcde
      Kernel Extensions in backtrace:
         com.apple.iokit.IOSCSIArchitectureModelFamily(3.5.1)[4CCC048B-060B-3C07-8D85-A8 4CEA02CD25]@0xffffff7f829f2000->0xffffff7f82a1cfff
         com.apple.iokit.IOSCSIBlockCommandsDevice(3.5.1)[E4EAAA05-F607-3299-AE72-998D19 A5EA17]@0xffffff7f82aae000->0xffffff7f82ac3fff
            dependency: com.apple.iokit.IOSCSIArchitectureModelFamily(3.5.1)[4CCC048B-060B-3C07-8D85-A8 4CEA02CD25]@0xffffff7f829f2000
            dependency: com.apple.iokit.IOStorageFamily(1.8)[5BA4CD36-E96D-3A9E-ADFF-A863BBD63BC7]@0xff ffff7f8297c000
         com.seagate.driver.PowSecDriverCore(5.2.2)[F1208D07-4D35-0191-3638-3D7CA8C9D5CF ]@0xffffff7f82b69000->0xffffff7f82ba1fff
            dependency: com.apple.iokit.IOUSBFamily(5.4.0)[C3094550-7F58-3933-A4F7-CD33AE83F8B9]@0xffff ff7f82a4c000
            dependency: com.apple.iokit.IOSCSIBlockCommandsDevice(3.5.1)[E4EAAA05-F607-3299-AE72-998D19 A5EA17]@0xffffff7f82aae000
            dependency: com.apple.iokit.IOStorageFamily(1.8)[5BA4CD36-E96D-3A9E-ADFF-A863BBD63BC7]@0xff ffff7f8297c000
            dependency: com.apple.iokit.IOSCSIArchitectureModelFamily(3.5.1)[4CCC048B-060B-3C07-8D85-A8 4CEA02CD25]@0xffffff7f829f2000
            dependency: com.apple.iokit.IOFireWireSBP2(4.2.0)[2B060BAD-9A9B-3A52-A742-A37CDFC59570]@0xf fffff7f82b4b000
last loaded kext at 1223700924328: com.apple.driver.AppleUSBCDC          4.1.22 (addr 0xffffff7f84440000, size 16384)
last unloaded kext at 1481342745694: com.apple.driver.AppleUSBCDC          4.1.22 (addr 0xffffff7f84440000, size 12288)
loaded kexts:
com.pogoplug.filesystems.ppfs          2010.10.7
com.seagate.driver.PowSecLeafDriver_10_5          5.2.2
com.seagate.driver.PowSecDriverCore          5.2.2
com.apple.driver.AppleMikeyHIDDriver          122
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AppleHDA          2.3.1f2
com.apple.driver.AppleBluetoothMultitouch          75.15
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.iokit.IOBluetoothSerialManager          4.0.9f33
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AGPM          100.12.69
com.apple.driver.AppleMikeyDriver          2.3.1f2
com.apple.filesystems.autofs          3.0
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport          4.0.9f33
com.apple.driver.ApplePolicyControl          3.2.11
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.driver.AppleLPC          1.6.0
com.apple.driver.AppleBacklight          170.2.3
com.apple.driver.AppleUpstreamUserClient          3.5.10
com.apple.driver.AppleMCCSControl          1.0.33
com.apple.kext.AMDFramebuffer          8.0.0
com.apple.ATIRadeonX2000          8.0.0
com.apple.driver.AppleUSBCardReader          3.1.0
com.apple.driver.AppleIRController          320.15
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          34
com.apple.iokit.SCSITaskUserClient          3.5.1
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.2.2
com.apple.driver.AppleUSBHub          5.2.5
com.apple.driver.AppleFWOHCI          4.9.6
com.apple.driver.AirPort.Atheros40          600.70.23
com.apple.driver.AppleAHCIPort          2.4.1
com.apple.nvenet          2.0.19
com.apple.driver.AppleUSBEHCI          5.4.0
com.apple.driver.AppleUSBOHCI          5.2.5
com.apple.driver.AppleEFINVRAM          1.6.1
com.apple.driver.AppleRTC          1.5
com.apple.driver.AppleHPET          1.7
com.apple.driver.AppleACPIButtons          1.6
com.apple.driver.AppleSMBIOS          1.9
com.apple.driver.AppleACPIEC          1.6
com.apple.driver.AppleAPIC          1.6
com.apple.driver.AppleIntelCPUPowerManagementClient          196.0.0
com.apple.nke.applicationfirewall          4.0.39
com.apple.security.quarantine          2
com.apple.driver.AppleIntelCPUPowerManagement          196.0.0
com.apple.driver.AppleBluetoothHIDKeyboard          165.5
com.apple.driver.AppleHIDKeyboard          165.5
com.apple.driver.DspFuncLib          2.3.1f2
com.apple.driver.IOBluetoothHIDDriver          4.0.9f33
com.apple.driver.AppleMultitouchDriver          235.28
com.apple.iokit.IOSurface          86.0.3
com.apple.iokit.IOSerialFamily          10.0.6
com.apple.iokit.IOBluetoothFamily          4.0.9f33
com.apple.kext.triggers          1.0
com.apple.iokit.IOFireWireIP          2.2.5
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport          4.0.9f33
com.apple.driver.AppleUSBAudio          2.9.0f6
com.apple.iokit.IOAudioFamily          1.8.9fc10
com.apple.kext.OSvKernDSPLib          1.6
com.apple.driver.AppleHDAController          2.3.1f2
com.apple.iokit.IOHDAFamily          2.3.1f2
com.apple.driver.AppleSMC          3.1.4d2
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.AppleSMBusPCI          1.0.10d0
com.apple.driver.IOPlatformPluginFamily          5.2.0d16
com.apple.driver.AppleGraphicsControl          3.2.11
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.driver.AppleSMBusController          1.0.10d0
com.apple.iokit.IONDRVSupport          2.3.5
com.apple.kext.AMD4600Controller          8.0.0
com.apple.kext.AMDSupport          8.0.0
com.apple.iokit.IOGraphicsFamily          2.3.5
com.apple.iokit.IOUSBHIDDriver          5.2.5
com.apple.iokit.IOUSBMassStorageClass          3.5.0
com.apple.driver.AppleUSBMergeNub          5.2.5
com.apple.driver.AppleUSBComposite          5.2.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.5.1
com.apple.iokit.IOBDStorageFamily          1.7
com.apple.iokit.IODVDStorageFamily          1.7.1
com.apple.iokit.IOCDStorageFamily          1.7.1
com.apple.iokit.IOFireWireSBP2          4.2.0
com.apple.iokit.IOSCSIBlockCommandsDevice          3.5.1
com.apple.iokit.IOAHCISerialATAPI          2.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.1
com.apple.iokit.IOUSBUserClient          5.2.5
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IO80211Family          500.15
com.apple.iokit.IOAHCIFamily          2.2.1
com.apple.iokit.IONetworkingFamily          3.0
com.apple.iokit.IOUSBFamily          5.4.0
com.apple.driver.NVSMU          2.2.9
com.apple.driver.AppleEFIRuntime          1.6.1
com.apple.iokit.IOHIDFamily          1.8.0
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          220
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.DiskImages          344
com.apple.iokit.IOStorageFamily          1.8
com.apple.driver.AppleKeyStore          28.21
com.apple.driver.AppleACPIPlatform          1.6
com.apple.iokit.IOPCIFamily          2.7.2
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.corecrypto          1.0

Imac 27" lATE 2012 SHUTS DOWN AND RESTARTS ON IT OWN.

My imac will suddenly shut down and then restart again showing a message that it shut down because there was a fault. Has done this a few times now and wondered why.

That sounds like a Kernel Panic error. Please read Apple's Mac OS X: How to log a kernel panic located at
http://support.apple.com/kb/ht2546
and then post the complete report. From that we can sometimes get an idea of what is going on. If you run any antivirus, MacKeeper or any other third party security, anti malware or performance apps of any type that may be your issue. However let's take a look at the KP log first.

Since installing OSX 10 my iMac randomly shuts down and restarts. I can not determine why this is happening. Any ideas?

Since installing OSX 10, my iMac randomly shuts down and restarts. I can not determine why this is happening. Any ideas?

1. This is a comment on what you should and should not do to protect yourself from malicious software ("malware") that circulates on the Internet. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
If you find this comment too long or too technical, read only sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
It can easily be disabled or overridden by the user.
A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
For the reasons given above, App Store products, and other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandboxing security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they're not absolute protection. The first and best line of defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you always stay within a safe harbor of computing practices. How do you know what is safe?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is unsafe.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software that purports to help you do something that's illegal or that infringes copyright, such as saving streamed audio or video for reuse without permission, is unsafe. All YouTube "downloaders" are outside the safe harbor, though not all are necessarily harmful.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe. For instance, if a web page warns you that Flash is out of date, do not follow an offered link to an update. Go to the Adobe website to download it, if you need it at all.
Even signed applications, no matter what the source, should not be trusted if they do something unexpected, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
"FREE WI-FI !!!" networks in public places are unsafe unless you can verify that the network is not a trap (which you probably can't.) Even then, do not download any software or transmit any private information while connected to such a network, regardless of where it seems to come from or go to.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Follow the above guidelines, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. Any database of known threats is always going to be out of date. Most of the danger is from unknown threats. If you need to be able to detect Windows malware in your files, use one of the free anti-virus products in the Mac App Store — nothing else.
Why shouldn't you use commercial "anti-virus" products?
Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. Most of the real danger comes from highly targeted "zero-day" attacks that are not yet recognized.
By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
8. An anti-malware product from the App Store, such as "ClamXav," doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An anti-virus app is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
Anti-virus software may be able to tell you which particular trojan it is, but do you care? In practice, there's seldom a reason to use the software unless an institutional policy requires it.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither should you assume that you will always be safe from exploitation, no matter what you do. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

My iMac screen keeps showing pixels of previously opened documents and Safari tabs and hour or two after closing them. The shadow of those opened documents are still there hours later after shutting down and restarting my computer. What is happening

My iMac screen keeps showing pixels of previously opened documents and Safari tabs and hour or two after closing them.
Even when I swipe to the dashboard the outlines are still there when I know they should not be.
The shadow of those opened documents are still there hours later after shutting down and restarting my computer.
What is happening and what shall I do? Thanks in advance.

Not much to go on in your product info, but maybe this will help: iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program. If not, then it's time to visit an Apple repair station.
27" i7 iMac (Mid 2011) refurb, OS X Mavericks (10.9.4), ML & SL, G4 450 MP w/Leopard, 9.2.2

I have an older IMac 5. I installed snow Leopard on. Now my DVD drive is not working. Discs go in but it dosn't boot up or show in finder. Then disc won't eject unless i shut down and restart. HELP !

I have an older IMac 5. I installed snow Leopard on. Now my DVD drive is not working. Discs go in but it dosn't boot up or show in finder. Then disc won't eject unless i shut down and restart. HELP !

Snow Leopard cannot run on a PPC G5 Mac as it requires an Intel processor. Please confirm what Mac you have.

HT1414 after installing the latest version of IOS my iPhone 4s rapidly runs out of power, it also suddently (fully charged) shuts down and restarts without me asking for it. I tried to reinstall the latest version of IOS but it doesnt help. Any advice?

After installing the latest version of IOS my iPhone 4s rapidly runs out of power, it also suddently (fully charged) shuts down and restarts without me asking for it. I tried to reinstall the latest version of IOS but it doesnt help. Any advice?

Backup and restore your software via iTunes. If the problem continues, restore as a NEW device. If this solves it, that means there is some corruption in your backup file. If the problem is still there, you should take it to the Genius Bar at an Apple Store for evaluation.

With iOS 7 and certain apps I get a message that ask me to connect to iTunes to receive notifications. After clicking "OK" it comes back repeatedly and freezes the App: Friends, Dropbox, among others. The only way to escape is to shut down and restart.

With iOS 7 and certain apps I get a message that ask me to connect to iTunes to receive notifications. After clicking "OK", it comes back repeatedly and freezes the App: Friends, Dropbox, among others. The only way to escape is to shut down and restart. I think this is a "bug" with older apps. How can I solve it in orther to use the apps? It doesn´t occur with my iPad, only with my iPhone 5.

Thankyou for your kind answer: with Dropbox, it solved the problem; with Friends, still the same

Error appear on the printer screen asking to shut down and restart .

i have a HP Officejet pro x476 dw MFP
I PAID $700 15 months ago . its a good machine when it work.
now it shows an error when i open it and bring me to a message saying shut down and restart.
i tried that many time it just doesn t work
can anyone help me here.
best regards Canadian Dan

What is a Kernel Panic?
http://support.apple.com/kb/TS3742
and http://support.apple.com/kb/TS1892?viewlocale=en_US
http://developer.apple.com/mac/library/technotes/tn2002/tn2063.html
More details here:
http://www.thexlab.com/faqs/kernelpanics.html
Useful article on how to avoid and eliminate kernel panics here:
http://reviews.cnet.com/8301-13727_7-10344626-263.html?tag=mfiredir

Since installing mountain lion system keeps shutting down and restarting

since i installed the latest operating system my iMac unexpectedly shuts down and restarts. this never happened prior to the install. anyone having similar problems?

here is the latest panic report
Tue Aug 27 18:54:07 2013
panic(cpu 0 caller 0xffffff80030530aa): "!pageList phys_addr"@/SourceCache/xnu/xnu-2050.24.15/iokit/Kernel/IOMemoryDescriptor.cpp: 1484
Backtrace (CPU 0), Frame : Return Address
0xffffff80eae63840 : 0xffffff8002c1d626
0xffffff80eae638b0 : 0xffffff80030530aa
0xffffff80eae63940 : 0xffffff8003053459
0xffffff80eae63a40 : 0xffffff800305270a
0xffffff80eae63a80 : 0xffffff7f83334b62
0xffffff80eae63ad0 : 0xffffff7f8333317c
0xffffff80eae63b20 : 0xffffff80030681f3
0xffffff80eae63b80 : 0xffffff800304907a
0xffffff80eae63be0 : 0xffffff7f83333ad2
0xffffff80eae63c20 : 0xffffff8003065e2f
0xffffff80eae63d70 : 0xffffff8002c98c01
0xffffff80eae63e80 : 0xffffff8002c20b3d
0xffffff80eae63eb0 : 0xffffff8002c10448
0xffffff80eae63f00 : 0xffffff8002c1961b
0xffffff80eae63f70 : 0xffffff8002ca6536
0xffffff80eae63fb0 : 0xffffff8002cce9e3
      Kernel Extensions in backtrace:
         com.apple.iokit.IOHIDFamily(1.8.1)[F0B6DA72-B1C1-3816-AC9F-5F1C12E8A7DD]@0xffff ff7f83332000->0xffffff7f8339efff
            dependency: com.apple.driver.AppleKeyStore(28.21)[79B72EA6-5F8C-3D6D-B0B7-0D29D183039D]@0xf fffff7f83324000
BSD process name corresponding to current thread: WacomTabletDrive
Mac OS version:
12E55
Kernel version:
Darwin Kernel Version 12.4.0: Wed May 1 17:57:12 PDT 2013; root:xnu-2050.24.15~1/RELEASE_X86_64
Kernel UUID: 896CB1E3-AB79-3DF1-B595-549DFFDF3D36
Kernel slide:     0x0000000002a00000
Kernel text base: 0xffffff8002c00000
System model name: iMac9,1 (Mac-F2218EA9)
System uptime in nanoseconds: 12012871915464
last loaded kext at 12001672244392: com.apple.driver.AppleUSBCDC 4.1.23 (addr 0xffffff7f84de2000, size 16384)
last unloaded kext at 5162425658972: com.apple.driver.AppleUSBCDC 4.1.23 (addr 0xffffff7f84ddf000, size 12288)
loaded kexts:
com.wdc.driver.USB_64HP 1.0.0
com.apple.driver.AppleUSBCDC 4.1.23
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AudioAUUC 1.60
com.apple.iokit.IOBluetoothSerialManager 4.1.4f2
com.apple.driver.AGPM 100.12.87
com.apple.driver.AppleHDA 2.3.7fc4
com.apple.driver.AppleMikeyHIDDriver 122
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleMikeyDriver 2.3.7fc4
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.ApplePolicyControl 3.4.5
com.apple.driver.AppleLPC 1.6.0
com.apple.driver.AppleUpstreamUserClient 3.5.10
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.1.4f2
com.apple.driver.AppleBacklight 170.2.5
com.apple.driver.AppleMCCSControl 1.1.11
com.apple.GeForce 8.1.2
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleIRController 320.15
com.apple.driver.Oxford_Semi 3.1.7
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 34
com.apple.iokit.SCSITaskUserClient 3.5.5
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.3.1
com.apple.driver.AppleUSBHub 5.5.5
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleFWOHCI 4.9.6
com.apple.driver.AirPort.Brcm4331 615.20.17
com.apple.driver.AppleAHCIPort 2.5.2
com.apple.nvenet 2.0.19
com.apple.driver.AppleUSBEHCI 5.5.0
com.apple.driver.AppleUSBOHCI 5.2.5
com.apple.driver.AppleEFINVRAM 1.7
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 1.7
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.7
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0
com.apple.nke.applicationfirewall 4.0.39
com.apple.security.quarantine 2.1
com.apple.driver.AppleIntelCPUPowerManagement 196.0.0
com.apple.driver.AppleBluetoothHIDMouse 175.8
com.apple.driver.AppleHIDMouse 175.8
com.apple.driver.IOBluetoothHIDDriver 4.1.4f2
com.apple.iokit.IOSerialFamily 10.0.6
com.apple.driver.DspFuncLib 2.3.7fc4
com.apple.iokit.IOAudioFamily 1.8.9fc11
com.apple.kext.OSvKernDSPLib 1.6
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.iokit.IOSurface 86.0.4
com.apple.iokit.IOBluetoothFamily 4.1.4f2
com.apple.driver.AppleSMC 3.1.4d2
com.apple.driver.AppleSMBusPCI 1.0.11d0
com.apple.driver.IOPlatformPluginFamily 5.3.0d51
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.1.4f2
com.apple.driver.AppleGraphicsControl 3.4.5
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleSMBusController 1.0.11d0
com.apple.driver.AppleHDAController 2.3.7fc4
com.apple.iokit.IOHDAFamily 2.3.7fc4
com.apple.nvidia.nv50hal 8.1.2
com.apple.NVDAResman 8.1.2
com.apple.iokit.IONDRVSupport 2.3.7
com.apple.iokit.IOGraphicsFamily 2.3.7
com.apple.kext.triggers 1.0
com.apple.driver.AppleUSBHIDKeyboard 170.2
com.apple.driver.AppleHIDKeyboard 170.2
com.apple.iokit.IOUSBHIDDriver 5.2.5
com.apple.iokit.IOFireWireSerialBusProtocolTransport 2.1.1
com.apple.iokit.IOFireWireSBP2 4.2.2
com.apple.driver.AppleUSBMergeNub 5.5.5
com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.5
com.apple.iokit.IOUSBMassStorageClass 3.5.1
com.apple.driver.AppleUSBComposite 5.2.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.5
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOAHCISerialATAPI 2.5.1
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.5
com.apple.iokit.IOUSBUserClient 5.5.5
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IO80211Family 530.4
com.apple.iokit.IOAHCIFamily 2.3.1
com.apple.iokit.IONetworkingFamily 3.0
com.apple.iokit.IOUSBFamily 5.6.0
com.apple.driver.NVSMU 2.2.9
com.apple.driver.AppleEFIRuntime 1.7
com.apple.iokit.IOHIDFamily 1.8.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 220.3
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.DiskImages 345
com.apple.iokit.IOStorageFamily 1.8
com.apple.driver.AppleKeyStore 28.21
com.apple.driver.AppleACPIPlatform 1.7
com.apple.iokit.IOPCIFamily 2.7.3
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
System Profile:
Model: iMac9,1, BootROM IM91.008D.B08, 2 processors, Intel Core 2 Duo, 2.66 GHz, 8 GB, SMC 1.44f0
Graphics: NVIDIA GeForce 9400, NVIDIA GeForce 9400, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x859B, 0x435435313236344243313036372E4D313646
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1067 MHz, 0x859B, 0x435435313236344243313036372E4D313646
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8E), Broadcom BCM43xx 1.0 (5.106.98.100.17)
Bluetooth: Version 4.1.4f2 12041, 2 service, 18 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: Hitachi HDT721032SLA380, 320.07 GB
Serial ATA Device: OPTIARC DVD RW AD-5670S
USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 4
USB Device: Keyboard Hub, apple_vendor_id, 0x1005, 0x24300000 / 3
USB Device: Apple Keyboard, apple_vendor_id, 0x021d, 0x24320000 / 5
USB Device: My Book, 0x1058 (Western Digital Technologies, Inc.), 0x1105, 0x24100000 / 2
USB Device: USB 2.0 Hub [MTT], 0x050d (Belkin Corporation), 0x0017, 0x26200000 / 2
USB Device: My Book 1148, 0x1058 (Western Digital Technologies, Inc.), 0x1148, 0x26210000 / 6
USB Device: Mass Storage Device, 0x058f (Alcor Micro, Corp.), 0x6362, 0x26270000 / 5
USB Device: USB2.0 Printer (Hi-speed), 0x04b8 (Seiko Epson Corp.), 0x0007, 0x26240000 / 4
USB Device: Eye-One display, 0x0971 (GretagMacbeth AG), 0x2003, 0x26230000 / 3
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2
USB Device: DTK-2100, 0x056a (WACOM Co., Ltd.), 0x00cc, 0x06400000 / 4
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 / 2
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x06110000 / 3
FireWire Device: FreeAgent FW, Seagate, 800mbit_speed

I have to shut down and restart mail to receive mail.

Since I installed the new system on my MacBrook Pro, I have to force quit and restart my mail to receive it. This is also happening on my brand new desktop (10.7.1), but not on my iPhone or iPad.

Thanks for your reply Carlo TD, I was just about to ask you what further info should I be giving however the problem seems to have cleared itself. I've not had to shut down and restart for about 6 hours or so now. However if the issue arises again I will be back here to try and solve it. Thank you again.

When I click to open firefox it says that "firefox is already running but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system" and I've tried to shut down and restart my computer but it keeps

when i click to open firefox it says that "firefox is already running but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." and I've tried to shut down and restart my computer but it keeps showing the same message. I've even uninstalled Firefox and then reinstalled in the hopes that the problem would be solved but it this message is still popping up. What can I do to solve this problem?
== This happened ==
Just once or twice
== I was on facebook trying to upload pictures yesterday. ==
== User Agent ==
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; InfoPath.1)

Do you have a profile lock file in your profile folder? If so, delete it and see if TB runs properly:
http://kb.mozillazine.org/Profile_in_use#Remove_the_profile_lock_file

This just started happening.. I open Itunes and the little round rainbow loading indicator just goes on and doesnt stop.. My itunes wont function.. It gets stuck. Then i have to force quit.. I tried to shut down and restart. also reloaded the latest itune

This just started happening.. I open Itunes and the little round rainbow loading indicator just goes on and doesnt stop.. My itunes wont function.. It gets stuck. Then i have to force quit.. I tried to shut down and restart. also reloaded the latest itune 11.1.3 and it still gets stuck.
i use an external HD and thats fine.. all files are in there. But I have no idea why my itunes app is getting stuck.
Am I the only person this is happening to? What can I do to correct this problem?

Hi marlonbnyc!
This article will help provide some basic troubleshooting steps that will serve as a guide for you to resolve this issue:
Mac OS X: How to troubleshoot a software issue
http://support.apple.com/kb/ht1199
Thanks for being a part of the Apple Support Communities!
Regards,
Braden

Firefox will not open on my computer the majority of the time. If I shut down and restart it will work sometimes, but not always. This started recently in the last two weeks. Today is June 12th 2011.

Firefox will not open on my computer the majority of the time. If I shut down and restart it will work sometimes, but not always. This started recently in the last two weeks. Today is June 12th 2011.

See:
* http://kb.mozillazine.org/Browser_will_not_start_up

I cannot open iphoto- the message I am getting says Shut down and restart your computer, and then open iPhoto again. If the problem persists, try rebuilding your photo library. To do this, quit iPhoto, and then reopen it while keeping the Option and Comma

i cannot open iphoto- the message I am getting says Shut down and restart your computer, and then open iPhoto again. If the problem persists, try rebuilding your photo library. To do this, quit iPhoto, and then reopen it while keeping the Option and Command-
I tries and it doesnt work!!

What version of iPhoto? Assuming 09 or later:
Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Repair Database. If that doesn't help, then try again, this time using Rebuild Database.
If that fails:
Option 2
Download iPhoto Library Manager and use its rebuild function. (In early versions of Library Manager it's the File -> Rebuild command. In later versions it's under the Library menu.)
This will create an entirely new library. It will then copy (or try to) your photos and all the associated metadata and versions to this new Library, and arrange it as close as it can to what you had in the damaged Library. It does this based on information it finds in the iPhoto sharing mechanism - but that means that things not shared won't be there, so no slideshows, books or calendars, for instance - but it should get all your events, albums and keywords, faces and places back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one.
Regards
TD

Imac asking to be shut down and restarted, then does it again???

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