Power off message in iMac

It has happened twice that a black screen shows saying to power off the iMac by pressing and holding the power button. I happens right after I log in.
What could this be? Anyone has had this problem? Other than that, the iMac is working properly, is fairly new.
Thanks

Something on your kit is causing a kernel panic. It could be caused by software that you installed or even a peripheral that you have attached.
Dah•veed

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    EAX: 0x00000000, EBX: 0x087a2d00, ECX: 0x087a2d34, EDX: 0x08b0d300
    CR2: 0x00000000, EBP: 0x52783f38, ESI: 0x13089780, EDI: 0x13089780
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    0x52783f38 : 0xfc92c2 (0x87a2d00 0x13089780 0x52783f88 0x226e2f)
    0x52783f58 : 0xfc8f8a (0x87a2d00 0x13089780 0x52783f78 0x2a45c9)
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    com.apple.nke.asp_tcp    5.0
    com.apple.driver.AppleHWSensor    1.9.3d0
    com.apple.filesystems.autofs    2.1.0
    com.apple.driver.AGPM    100.12.31
    com.apple.driver.AppleMikeyHIDDriver    1.2.0
    com.apple.driver.AppleUpstreamUserClient    3.5.7
    com.apple.driver.AppleMCCSControl    1.0.20
    com.apple.driver.AppleHDA    2.0.5f14
    com.apple.driver.AppleMikeyDriver    2.0.5f14
    com.apple.driver.AudioAUUC    1.57
    com.apple.driver.AppleLPC    1.5.1
    com.apple.driver.AppleBacklight    170.0.46
    com.apple.driver.SMCMotionSensor    3.0.1d2
    com.apple.Dont_Steal_Mac_OS_X    7.0.0
    com.apple.driver.AudioIPCDriver    1.1.6
    com.apple.driver.ACPI_SMC_PlatformPlugin    4.7.0a1
    com.apple.GeForce    6.3.6
    com.apple.driver.AppleIntelPenrynProfile    17
    com.apple.driver.AppleUSBTCButtons    201.6
    com.apple.driver.AppleUSBTCKeyboard    201.6
    com.apple.iokit.SCSITaskUserClient    2.6.8
    com.apple.BootCache    31.1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1
    com.apple.iokit.IOAHCIBlockStorage    1.6.4
    com.apple.driver.AppleHPET    1.5
    com.apple.driver.AppleSmartBatteryManager    160.0.0
    com.apple.nvenet    2.0.17
    com.apple.driver.AirPortBrcm43224    428.42.4
    com.apple.driver.AppleAHCIPort    2.1.7
    com.apple.driver.AppleUSBHub    4.2.4
    com.apple.driver.AppleUSBEHCI    4.2.4
    com.apple.driver.AppleUSBOHCI    4.2.0
    com.apple.driver.AppleEFINVRAM    1.4.0
    com.apple.driver.AppleRTC    1.3.1
    com.apple.driver.AppleACPIButtons    1.3.6
    com.apple.driver.AppleSMBIOS    1.7
    com.apple.driver.AppleACPIEC    1.3.6
    com.apple.driver.AppleAPIC    1.4
    com.apple.driver.AppleIntelCPUPowerManagementClient    142.6.0
    com.apple.security.sandbox    1
    com.apple.security.quarantine    0
    com.apple.nke.applicationfirewall    2.1.14
    com.apple.driver.AppleIntelCPUPowerManagement    142.6.0
    com.apple.driver.AppleBluetoothHIDMouse    162 - last loaded 32069407413469
    com.apple.driver.IOBluetoothHIDDriver    2.4.5f3
    com.apple.driver.AppleHIDMouse    162
    com.apple.driver.DspFuncLib    2.0.5f14
    com.apple.driver.AppleProfileReadCounterAction    17
    com.apple.driver.AppleProfileTimestampAction    10
    com.apple.driver.AppleProfileThreadInfoAction    14
    com.apple.driver.AppleProfileRegisterStateAction    10
    com.apple.driver.AppleProfileKEventAction    10
    com.apple.driver.AppleProfileCallstackAction    20
    com.apple.driver.AppleSMBusController    1.0.10d0
    com.apple.driver.AppleBacklightExpert    1.0.1
    com.apple.nvidia.nv50hal    6.3.6
    com.apple.iokit.IOSurface    74.2
    com.apple.iokit.IOBluetoothSerialManager    2.4.5f3
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    com.apple.iokit.IOAudioFamily    1.8.3fc2
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    com.apple.driver.AppleHDAController    2.0.5f14
    com.apple.iokit.IOHDAFamily    2.0.5f14
    com.apple.driver.IOPlatformPluginFamily    4.7.0a1
    com.apple.NVDAResman    6.3.6
    com.apple.iokit.IONDRVSupport    2.2.1
    com.apple.iokit.IOGraphicsFamily    2.2.1
    com.apple.driver.AppleSMBusPCI    1.0.10d0
    com.apple.driver.AppleSMC    3.1.0d5
    com.apple.iokit.AppleProfileFamily    41
    com.apple.driver.BroadcomUSBBluetoothHCIController    2.4.5f3
    com.apple.driver.AppleUSBBluetoothHCIController    2.4.5f3
    com.apple.iokit.IOBluetoothFamily    2.4.5f3
    com.apple.driver.AppleUSBMultitouch    207.7
    com.apple.iokit.IOUSBHIDDriver    4.2.0
    com.apple.driver.AppleUSBMergeNub    4.2.4
    com.apple.driver.AppleUSBComposite    3.9.0
    com.apple.iokit.IOSCSIMultimediaCommandsDevice    2.6.8
    com.apple.iokit.IOBDStorageFamily    1.6
    com.apple.iokit.IODVDStorageFamily    1.6
    com.apple.iokit.IOCDStorageFamily    1.6.1
    com.apple.iokit.IOAHCISerialATAPI    1.2.6
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    com.apple.iokit.IOUSBUserClient    4.2.4
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    com.apple.driver.NVSMU    2.2.7
    com.apple.driver.AppleEFIRuntime    1.4.0
    com.apple.iokit.IOHIDFamily    1.6.6
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    com.apple.driver.DiskImages    289
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    kalloc.64:2584576
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    uthreads:136895616
    vnodes:1603440
    HFS node:1569792
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    com.apple.driver.Apple02DBDMAAudio         2.5.8f1 - last unloaded 5100439716
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    com.apple.filesystems.msdosfs  1.5.5 - last loaded 2933016418
    com.apple.filesystems.autofs     2.0.2
    com.apple.driver.AudioIPCDriver         1.0.6
    com.apple.GeForcePPC           5.4.8
    com.apple.driver.InternalModemSupport          2.4.0
    com.apple.driver.MotorolaSM56K       1.3.9
    com.apple.driver.AppleOnyxAudio       2.5.8f1
    com.apple.driver.AppleTexasAudio      2.5.8f1
    com.apple.driver.AppleTexas2Audio    2.5.8f1
    com.apple.driver.AppleDACAAudio    2.5.8f1
    com.apple.AppleOnboardDisplay         1.15.1
    com.apple.driver.AppleSEP      1.3.0
    com.apple.driver.PowerMac8_1_ThermalProfile           3.4.0d0
    com.apple.driver.AppleSCCSerial        1.3.2
    com.apple.driver.AppleK2Driver          1.7.2f1
    com.apple.driver.AppleI2S       1.0.1f1
    com.apple.driver.AppleLM7x   1.9d0
    com.apple.iokit.IOFireWireIP   1.7.7
    com.apple.driver.AppleVSP     2.2.2
    com.apple.nvidia.nv30hal          5.4.8
    com.apple.driver.AppleHWSensor       1.9d0
    com.apple.driver.AppleSMUMonitor    1.9d0
    com.apple.driver.ApplePulsar   1.5.2d0
    com.apple.driver.AppleCPUThermo     2.0.0a0
    com.apple.driver.AppleFileSystemDriver          1.1.0
    com.apple.driver.AppleUSBHIDMouse            1.2.4b3
    com.apple.driver.AppleUSBMergeNub            3.5.2
    com.apple.iokit.IOUSBMassStorageClass        2.0.8
    com.apple.driver.iTunesPhoneDriver     1.0
    com.apple.driver.XsanFilter      2.7.91
    com.apple.iokit.IOSCSIMultimediaCommandsDevice   2.1.1
    com.apple.iokit.SCSITaskUserClient    2.1.1
    com.apple.driver.LSI_FW_500            2.0.9
    com.apple.driver.Oxford_Semi 2.0.9
    com.apple.driver.initioFWBridge           2.0.9
    com.apple.driver.IOFireWireSerialBusProtocolSansPhysicalUnit           2.0.9
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    I have had my iMac for 55 days now and twice I had to power off/on and then It does not power up correctly.  I verified my disk and found errors that could not be repaired (errors were associated with boot drive)  I erased the drive and restored system back to the previous day.  Has anyone else experienced this problem?

    Since it's a new machine, contact Apple's Support and let them deal with it. Allen's already recommended an Apple repair station visit. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you might be eligible for an onsite repair since yours is a desktop machine (depends on where you're located).  BTW, the AppleCare Protection Plan's the best warranty policy available for desktop machines. Get it if you don't have it before contacting Apple.
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    I have a 5 month old  iMac running Lion and W7 with the latest version of boot camp . It has been operating flawlessly until I went to reboot into Mac tonight. Screen went black, and system is unresponsive. I've tried force quitting and turning power off. Hard drive starts, there's a small amount of drive activity and that's it. 

    Hi Jane, your info may still be there, look in the Users folder at root of the drive, how many users are there there?
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  • After update my imac to yosemite automatically power off ifself.pls help

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    Hi.
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    2)  In the Finder menu, select Go > Go to Folder...
    3)  Type: " ~/Library/Caches" (without quotes) into the box and press return.  You will be taken to the Caches folder.
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    5)  Go back to the Finder menu, select Go > Go to Folder...
    6)  Type: "/Library/Caches" (without quotes) into the box and press return.
    7)  Do the same thing you did in 4)  This time, though, you will be asked for an administrator's password.
    8)  Restart your computer in normal mode and attempt login.
    9)  If you can log to the desktop, you may delete your trash.
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    Good luck!

  • Message on my C5580 "power off, then power on" none of HP's solutions work

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    This may help:
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