Why does my iMac shut down unexpectantly?

Check System Preferences > Energy Sacer > Schedule
And try disconnecting all periphals except for the keyboard and mouse.

Similar Messages

Why does my IMac shut down five minutes after start up?

I have a 21" Imac, purchased 2010. If I don't login to a user account within five minutes of start up the IMac shuts down. It used to go to a sleep mode.
My OS is Mavericks, 10.9.3. I also have the latest security update. A message comes on the start screen within one minute. It reads, if you are having trouble entering your password press the start button to shut down, then press again to enter a recovery OS. If I login within 5 minutes of start all is well.
Thanks, Gary

I have a 21" Imac, purchased 2010. If I don't login to a user account within five minutes of start up the IMac shuts down. It used to go to a sleep mode.
My OS is Mavericks, 10.9.3. I also have the latest security update. A message comes on the start screen within one minute. It reads, if you are having trouble entering your password press the start button to shut down, then press again to enter a recovery OS. If I login within 5 minutes of start all is well.
Thanks, Gary

Why does my iMac shut down during sleep?

Recently my iMac on 10.9.2 shuts down while asleep at night. The log is below.
Anonymous UUID:       AB81CF7F-300F-0F23-BA20-B5C00F522753
Sun May 4 07:52:49 2014
panic(cpu 0 caller 0xffffff800a6c020b): "TLB invalidation IPI timeout: " "CPU(s) failed to respond to interrupts, unresponsive CPU bitmap: 0x6, NMIPI acks: orig: 0x0, now: 0x0"@/SourceCache/xnu/xnu-2422.92.1/osfmk/x86_64/pmap.c:2612
Backtrace (CPU 0), Frame : Return Address
0xffffff81dae7b050 : 0xffffff800a622fa9
0xffffff81dae7b0d0 : 0xffffff800a6c020b
0xffffff81dae7b160 : 0xffffff800a6c51e3
0xffffff81dae7b240 : 0xffffff800a6c5cd7
0xffffff81dae7b2a0 : 0xffffff800a67e464
0xffffff81dae7b3b0 : 0xffffff800a6822df
0xffffff81dae7b3e0 : 0xffffff800a67c274
0xffffff81dae7b410 : 0xffffff800a803e74
0xffffff81dae7b440 : 0xffffff800a803fd6
0xffffff81dae7b460 : 0xffffff800a9817d3
0xffffff81dae7b490 : 0xffffff800a96ee43
0xffffff81dae7b550 : 0xffffff800a96c130
0xffffff81dae7b5b0 : 0xffffff800a984cb2
0xffffff81dae7b610 : 0xffffff800a7fc756
0xffffff81dae7b9e0 : 0xffffff800a7fc646
0xffffff81dae7ba20 : 0xffffff800a7de60f
0xffffff81dae7bb80 : 0xffffff800a7e65b2
0xffffff81dae7bc30 : 0xffffff800a7e6ce2
0xffffff81dae7bf50 : 0xffffff800aa3e413
0xffffff81dae7bfb0 : 0xffffff800a6f3b76
BSD process name corresponding to current thread: CalendarAgent
Mac OS version:
13C1021
Kernel version:
Darwin Kernel Version 13.1.0: Wed Apr 2 23:52:02 PDT 2014; root:xnu-2422.92.1~2/RELEASE_X86_64
Kernel UUID: E9CF78E2-1E9F-3B6F-81A4-FEE6C6D0E4D5
Kernel slide:     0x000000000a400000
Kernel text base: 0xffffff800a600000
System model name: iMac11,3 (Mac-F2238BAE)
System uptime in nanoseconds: 59470396764246
last loaded kext at 52110826751224: com.apple.driver.AppleIntelMCEReporter          104 (addr 0xffffff7f8ccbc000, size 49152)
last unloaded kext at 44657134745411: com.apple.driver.AppleIntelMCEReporter          104 (addr 0xffffff7f8ccbc000, size 32768)
loaded kexts:
com.aladdin.kext.aksfridge          1.0.2
com.symantec.kext.SymAPComm          12.6.1f9
com.symantec.kext.fw          5.3.1f9
com.symantec.kext.ips          3.9.2f1
com.symantec.kext.pf          5.6.1f9
com.symantec.kext.internetSecurity          5.3.1f8
com.apple.driver.AppleIntelMCEReporter          104
com.apple.filesystems.autofs          3.0
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.iokit.IOBluetoothSerialManager          4.2.3f10
com.apple.driver.AGPM          100.14.15
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AppleMikeyHIDDriver          124
com.apple.driver.AppleMikeyDriver          2.6.0f1
com.apple.driver.AppleHDA          2.6.0f1
com.apple.driver.AppleUpstreamUserClient          3.5.13
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.kext.AMDFramebuffer          1.2.0
com.apple.driver.AppleBacklight          170.3.5
com.apple.driver.AppleMCCSControl          1.1.12
com.apple.driver.AppleLPC          1.7.0
com.apple.AMDRadeonX3000          1.2.0
com.apple.kext.AMD5000Controller          1.2.0
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.2.3f10
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AppleHWAccess          1
com.apple.driver.Oxford_Semi          3.4.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          35
com.apple.driver.AppleUSBCardReader          3.4.1
com.apple.driver.AppleIRController          325.7
com.apple.iokit.SCSITaskUserClient          3.6.6
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.5.1
com.apple.driver.AppleUSBHub          666.4.0
com.apple.driver.AppleFWOHCI          4.9.9
com.apple.driver.AirPort.Atheros40          700.74.5
com.apple.iokit.AppleBCM5701Ethernet          3.8.1b2
com.apple.driver.AppleAHCIPort          3.0.0
com.apple.driver.AppleUSBEHCI          660.4.0
com.apple.driver.AppleRTC          2.0
com.apple.driver.AppleACPIButtons          2.0
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleSMBIOS          2.1
com.apple.driver.AppleACPIEC          2.0
com.apple.driver.AppleAPIC          1.7
com.apple.driver.AppleIntelCPUPowerManagementClient          216.0.0
com.apple.nke.applicationfirewall          153
com.apple.security.quarantine          3
com.apple.driver.AppleIntelCPUPowerManagement          216.0.0
com.apple.kext.triggers          1.0
com.apple.iokit.IOSerialFamily          10.0.7
com.apple.driver.DspFuncLib          2.6.0f1
com.apple.vecLib.kext          1.0.0
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.AppleUSBAudio          2.9.5f4
com.apple.iokit.IOAudioFamily          1.9.5fc2
com.apple.kext.OSvKernDSPLib          1.14
com.apple.driver.AppleSMBusPCI          1.0.12d1
com.apple.iokit.IOFireWireIP          2.2.6
com.apple.driver.AppleHDAController          2.6.0f1
com.apple.iokit.IOHDAFamily          2.6.0f1
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.driver.IOPlatformPluginFamily          5.7.0d10
com.apple.iokit.IONDRVSupport          2.4.1
com.apple.iokit.IOAcceleratorFamily          98.14
com.apple.kext.AMDSupport          1.2.0
com.apple.AppleGraphicsDeviceControl          3.4.35
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.2.3f10
com.apple.iokit.IOSurface          91
com.apple.iokit.IOGraphicsFamily          2.4.1
com.apple.iokit.IOBluetoothFamily          4.2.3f10
com.apple.driver.AppleSMC          3.1.8
com.apple.driver.AppleUSBHIDKeyboard          170.15
com.apple.driver.AppleHIDKeyboard          170.15
com.apple.iokit.IOFireWire
Model: iMac11,3, BootROM IM112.0057.B01, 4 processors, Intel Core i5, 2.8 GHz, 16 GB, SMC 1.59f2
Graphics: ATI Radeon HD 5750, ATI Radeon HD 5750, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x857F, 0x483634353155363446393333334700000000
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x857F, 0x483634353155363446393333334700000000
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x857F, 0x483634353155363446393333334700000000
Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1333 MHz, 0x857F, 0x483634353155363446393333334700000000
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.74.0-P2P
Bluetooth: Version 4.2.3f10 13477, 3 services, 23 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: WDC WD1001FALS-40Y6A0, 1 TB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: Hub
USB Device: USB2.0 Hub
USB Device: Matias Keyboard
USB Device: Built-in iSight
USB Device: IR Receiver
USB Device: Hub
USB Device: USB 2.0 Hub [MTT]
USB Device: Bose SoundLink Audio
USB Device: USB 2.0 Hub
USB Device: SDDR-113
USB Device: USB OPTICAL MOUSE
USB Device: Internal Memory Card Reader
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
FireWire Device: Elite Pro U3FW, OWC, Up to 800 Mb/sec
Thunderbolt Bus:

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Why does my iPad shuts down unexpected?

My iPad will just shut down on its own, loose where I was and I have to start all over. Any help?

1. Double-click the Home button to close all Inactive Apps in Task Bar
2. Hold the Apps in Task Bar down for a second or two until you see the minus sign
3. Tap the minus sign to close Apps
4. Tap center of screen to return to Home Screen
5. Reset iPad. Hold the Sleep and Home button down for about 10 second until you see the Apple logo. Ignore the red slider

Why does my iMac shut down before it can boot up After installing 7.3 update on my iMac?

After installing 7.3 last night, I hit restart and went to bed. My intel iMac i7 3.4ghz was powered down this morning, and only after unplugging,waiting, rep plugging,
It finally powered on, only to boot to the gray apple screen, go black and silent. (this exact issue had me lugging it back to apple a month after purchase, today is 93 days)
Recovery mode got me about one second further in bottling up before shutting off.
I was forced to upgrade from an unproblematic pc g5, after iCloud, so do not own snow leopard and was told I would never need a re install disc.
Has anyone having the powering off during boot after updating to 7.3?

omg. I would copy and paste your original post to the iMac section. You're talking about a fine piece of equipment, the Intel iMac i7 3.4ghz , and you should not be having such problems. Maybe others in the iMac i7 community might also have some ideas.
Re: the safe boot. That's good that it worked. This is fairly new and very, very helpful with a dead computer because at least you can get to Safari, get to the Internet and get ideas and seek help.
But why did it shut off after a while? That's not right. No reason it should have done that.
From something you said I would worry about your power supply problem or this PerIphrEa. I don't know what that is but Migration is built into Lion OS, no? Third party perificials (or apps) can certainly cause conflicts and not work as well as advertised.
Also, seriously, I would get some tape, like duct tape, and tape up that loose power supply.
Why do you need something extra for your migration? (Or is the reason your old PowerPC G5 needs to run Lion but it can't?).
If that is the problem, here's an idea. Continue the canibalization of your PowerPC G5, take out it's hard drive(s). Buy an 'enclosure' to put the hard drive in and allow you to connect this hard drive to your new machine, the beautiful iMac i7, using the old hard drive as an external drive.
I did exactly this with my old PowerPC G5, using this enclosure, a Macally G-S350SUA, info at: http://www.macally.com/en/product/ipod4show.asp?ArticleID=215
I now use this for my Time Machine backups.
Re:What is the proper amount of time the computer needs to be unplugged? This would worry me. I turn off my comuter NOT by unplugging it but by holding the power on button for about 3-4 seconds and then it turns off.
I then wait 5 long seconds before pressing the power on button again to turn the computer back on.
Having to plug in and unplug and plug in and having to wait ten minutes for it to work is not normal.
Is there a power supply issue in your home, perhaps?
Considering the value of this machine and the fact that it may still be under warrenty, I'd consider the weeklong diagnostic. Would the machine have the same need to wait ten minutes to turn on at the Apple place?
What if you plug it in at a friend's house, or an office or library? Would it still take ten minutes before you could turn the machine on?
It might seem horrible to have to wait a week...or to do this again and again but I'd recommend taking full advantage of your warrenty, keep sticking this problem back to Apple and insist it gets made right. It will be worth it in the long run.

Why does my mac Shuts down intermittently

Why does my mac intel Shuts down intermittently?

Hello veniecy,
Welcome to Apple Support Communities.
This article provides information and troubleshooting tips that will resolve most issues like the one that you’re running into when your iMac shuts down unexpectedly.
OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem." - Apple Support
Ciao,
-Jason

Why does my macbook shut down when I am watching a film using airplay on apple TV?

why does my macbook shut down when I am watching a film using airplay on apple TV?

It appears to shut down and all the open programmes are closed

Why does my Mac shut down when using Safari?

Every once in a while (randomly) my mac will reboot due to an error even when I only have the Safari Application open. How can I stop my mac from doing this. I have the 2011 macbook pro 13 inch with the latest OS (Mountain Lion). Everything is up to date but why does it keep shutting down?

Hi Sebaz, first try repairing permissions. Go to Applications-->Utilities-->select Disk Utility. Select your drive then select the First Aid button then at the bottom right click Verify Disk and after it verifies your drive click on Verify Disk Permissions on the left. If there any errors click on Repair Disk Permission. Reboot your machine and test your Safari to see if the issue comes back.

Why does iPhone 5 shuts down in 2 C degrees? This should be inside operating temperature limits?

Hello,
Why does iPhone 5 shuts down with +2 C (celsius) degrees outside? This should be inside operating temperature limits? I´m living in Estonia and I was using iPhone 5 approximately 1 hour with +2 C (celsius) outside. Suddenly it just powered itself off with 25% of remaining battery. I was not able to switch it on again before warming it up inside the house.
I´ve been reading lots of similar complaints regarding other customers iPhone 5-s. Seems that the problem may be the aluminium back cover and thin, large-surfaced battery cause older iPhones are operating with same temperature just fine. Do you have any plan to fix this issue in the future?
Best regards,
Silver Siilak
<Personal Information Edited by Host>

You're not speaking to Apple, just your fellow users. The specs say it's good down to 0°C... sounds like you have a hardware problem, likely battery. Contact Apple, it's still under warranty.
Hint: NEVER put your personal info in a public forum. Edit your post to remove this info. Also, I'll ask the moderators to do it if you can't.

Why does my Safari shut down when loading a page?

Why does my Safari shut down when I'm trying to load a page?

Is this for a Mac? You posted in the Beta for Windows section, you might want to try the Beta for Mac pages instead and see if anyone there know a good fix. Is this just with Adobe's PDF reader, or with Preview too? A workaround could simply be switching to a different reader, if you simply cannot find what causes the crashes. A clean reinstall might do the trick, if you haven't done so already.
If this is on Windows than I would recommend downloading the PDF plugin from http://www.apple.com/safari/download/plugins.html
Message was edited by:  Andy

My imac shuts down unexpectedly and now a fan is running??

Hello,
I have been working on my iMac all morning and it shut down twice within a half hour and I had to press the start button on the back to get it going again. Now their is a loud fan running and I have no idea what is going on. Help much appreciated. Thanks in advance!

Hi ebeugs,
Thanks for visiting Apple Support Communities.
If your iMac shut down unexpectedly, and the fan is running unusually fast or loud, you may need to reset the System Management Controller.
I recommend following this troubleshooting method:
Before Resetting the SMC
Try each of the following steps in this order before you reset the SMC. Test the issue after completing each troubleshooting step to determine if the issue still occurs.
Press Command + Option + Escape to force quit any application that is not responding.
Put your Mac to sleep by choosing the Apple () menu from the upper-left menu bar and then choosing Sleep. Wake the computer after it has gone to sleep.
Restart your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Restart.
Shut down your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Shut Down.
If the iMac unexpectedly shuts down again, or the fan continues running unusually fast or loud, follow these steps:
Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
You can find these steps and more information about resetting the SMC here:
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
Best Regards,
Jeremy

Why does my iphone shut down my computer when i have pictures on my phone

Why does my iphone shut down my computer when I plug into the USB port when I have pictures on my phone. My computer says it has found a new digital camera - then my computer shuts down.

Thank you Lawrence. I forgot I used to run a Logitech webcam several years ago and I hadn't uninstalled program when I changed the camera to a different one. I uninstalled the camera and it now seems to accept my phone with pictures onto my computer without shutting my computer down. I really appreciate your help with this problem.

Why does the screenline shut down after about 2 clips? the tutorial worked fine.

Why does the screenline shut down after about 2 clips? the tutorial worked fine.

I don't know about MOD files, since I don't use them
>As a beginner
LOTS of learning information in these links
Online User Guide http://help.adobe.com/en_US/premiereelements/using/index.html
-Page to download current PDF http://helpx.adobe.com/premiere-elements.html
Importing Video http://forums.adobe.com/thread/1065281
-and project settings http://forums.adobe.com/thread/1112086
Saving & Sharing http://forums.adobe.com/thread/1137128
-Sharing to DVD or BluRay http://forums.adobe.com/thread/1137645
-Sharing for Movies http://forums.adobe.com/thread/1051093
-Sharing for Computer http://forums.adobe.com/thread/1058237
Steve's Basic Training Tutorials... steps are the same for several versions
-http://forums.adobe.com/thread/537685
-v11 http://www.amazon.com/Muvipix-Guide-Premiere-Elements-version/dp/1479311200/
-All http://www.amazon.com/Tricks-Adobe-Premiere-Elements-Muvipix-com/dp/1451529724/
-and http://forums.adobe.com/thread/498626
-and http://prodesigntools.com/four-hours-free-video-tutorials-new-photoshop-elements-9-pse9.ht ml
-and http://prodesigntools.com/five-hours-free-tutorials-photoshop-and-premiere-elements-7-and- 8.html
FAQ http://forums.adobe.com/community/premiere_elements/premiere_elements_faq
TIPS http://forums.adobe.com/community/premiere_elements/premiere_elements_tips
Another help site http://muvipix.com/ or http://muvipix.com/phpBB3/

Why does iphone 3gs shut down by itself?

Why does iphone 3gs shut down by itself?

Its pobably running out of battery, Try plugging it in.
I Hope I Was Able To Help You Or Solve Your Question.
Simmm
3/12/2012
If Someone Helped You, Click
"This Helped Me"
If Someone Solved Your Question, Click
"This Solved My Question"

Why does my iPad shut down when I try to open Facebook?

Why does my iPad shut down when I try to open Facebook? it just started doing this 3 days ago. I cannot get into my Facebook account on my iPad!!

Close all apps in the multi-task window and try again.
1.Double-click the Home button.
2. Swipe the app's preview up to close it.
3. Preview will fly off the screen.

Why does my iMac shut down unexpectantly?

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