Need Help : Imac (2008) Shutting down randomly

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Hey there ; looking for some advice from an experienced mac person. I'm clueless here.

Imac 24 inch
3.06 Core duo
4gb ram
Geforce 8800 GS
1TB Hitachi HDD

When opening new applications, mild multi tasking or even sleeping Imac has been crashing. I backed up all files and re wrote the hard drive x1 and reinstalled Yosemite , problem still exists.

CPU Diode is currently 38 degrees C . Don't know if is a heat issue but have UP'd the fan speeds.

Here is a copy of the error report :

Anonymous UUID: 06E1EE42-2A53-D486-0D30-52B2BD62016E

Thu Jan 8 17:25:05 2015

*** Panic Report ***
panic(cpu 0 caller 0xffffff7f95693bb4): NVRM[0/1:0:0]: Read Error 0x00002048: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xe2000000 0xffffff80aedb4000 0x092480a2, D0, P3/4
Backtrace (CPU 0), Frame : Return Address
0xffffff801c6a3580 : 0xffffff8014b3a811
0xffffff801c6a3600 : 0xffffff7f95693bb4
0xffffff801c6a36c0 : 0xffffff7f959a978d
0xffffff801c6a3700 : 0xffffff7f9598b516
0xffffff801c6a3730 : 0xffffff7f9599c2a1
0xffffff801c6a3760 : 0xffffff7f9598b393
0xffffff801c6a3880 : 0xffffff7f957d1632
0xffffff801c6a39d0 : 0xffffff7f957d117d
0xffffff801c6a3ae0 : 0xffffff7f9598dd4e
0xffffff801c6a3b80 : 0xffffff7f9598e4d1
0xffffff801c6a3d20 : 0xffffff7f959d18ca
0xffffff801c6a3e20 : 0xffffff7f9578082d
0xffffff801c6a3e40 : 0xffffff7f9569a5f1
0xffffff801c6a3ef0 : 0xffffff80150d7162
0xffffff801c6a3f40 : 0xffffff80150d507d
0xffffff801c6a3f80 : 0xffffff80150d5146
0xffffff801c6a3fb0 : 0xffffff8014c192c7
Kernel Extensions in backtrace:
com.apple.nvidia.classic.NVDAResmanTesla(10.0)[796AE430-39FB-3255-8161-D52AFA28EE2B]@0xffffff7f95643000->0xffffff7f958acfff
dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff7f95324000
dependency: com.apple.iokit.IONDRVSupport(2.4.1)[F4738C55-B507-3627-A9CA-3D29A5230A03]@0xffffff7f95633000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[6D99A3BE-D531-3780-880B-13F2FC894A4A]@0xffffff7f955ec000
com.apple.nvidia.classic.NVDANV50HalTesla(10.0)[7FE40648-F15F-3E18-91E2-FDDDF4CDA355]@0xffffff7f958b7000->0xffffff7f95b60fff
dependency: com.apple.nvidia.classic.NVDAResmanTesla(10.0.0)[796AE430-39FB-3255-8161-D52AFA28EE2B]@0xffffff7f95643000
dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff7f95324000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
14B25

Kernel version:
Darwin Kernel Version 14.0.0: Fri Sep 19 00:26:44 PDT 2014; root:xnu-2782.1.97~2/RELEASE_X86_64
Kernel UUID: 89E10306-BC78-3A3B-955C-7C4922577E61
Kernel slide: 0x0000000014800000
Kernel text base: 0xffffff8014a00000
__HIB text base: 0xffffff8014900000
System model name: iMac8,1 (Mac-F227BEC8)

System uptime in nanoseconds: 8604414940454
last loaded kext at 255187972085: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7f96ff0000, size 69632)
last unloaded kext at 315830045877: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7f96ff0000, size 61440)
loaded kexts:
com.apple.driver.AppleBluetoothMultitouch 85.3
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AudioAUUC 1.70
com.apple.filesystems.autofs 3.0
com.apple.iokit.IOBluetoothSerialManager 4.3.1f2
com.apple.driver.AppleOSXWatchdog 1
com.apple.driver.AppleHDA 267.0
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.7.3
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.1f2
com.apple.driver.AppleUpstreamUserClient 3.6.1
com.apple.GeForceTesla 10.0.0
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleHV 1
com.apple.driver.AppleBacklight 170.4.12
com.apple.driver.AppleMCCSControl 1.2.10
com.apple.driver.AppleIRController 327.5
com.apple.iokit.SCSITaskUserClient 3.7.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.6.5
com.apple.driver.AppleUSBHub 705.4.1
com.apple.driver.AppleIntelPIIXATA 2.5.1
com.apple.driver.AirPortBrcm43224 700.36.24
com.apple.iokit.AppleYukon2 3.2.3b1
com.apple.driver.AppleFWOHCI 5.5.2
com.apple.driver.AppleAHCIPort 3.0.7
com.apple.driver.AppleUSBUHCI 656.4.1
com.apple.driver.AppleUSBEHCI 705.4.14
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 3.1
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 3.1
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0
com.apple.nke.applicationfirewall 161
com.apple.security.quarantine 3
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 218.0.0
com.apple.driver.IOBluetoothHIDDriver 4.3.1f2
com.apple.driver.AppleMultitouchDriver 260.30
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 11
com.apple.driver.DspFuncLib 267.0
com.apple.kext.OSvKernDSPLib 1.15
com.apple.iokit.IOAudioFamily 200.6
com.apple.vecLib.kext 1.2.0
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.AppleHDAController 267.0
com.apple.iokit.IOHDAFamily 267.0
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.1f2
com.apple.nvidia.classic.NVDANV50HalTesla 10.0.0
com.apple.driver.IOPlatformPluginFamily 5.8.0d49
com.apple.iokit.IOUSBUserClient 705.4.0
com.apple.iokit.IOSurface 97
com.apple.iokit.IOBluetoothFamily 4.3.1f2
com.apple.driver.AppleSMC 3.1.9
com.apple.driver.AppleBacklightExpert 1.1.0
com.apple.driver.AppleSMBusController 1.0.13d1
com.apple.nvidia.classic.NVDAResmanTesla 10.0.0
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.driver.AppleUSBHIDKeyboard 175.5
com.apple.driver.AppleHIDKeyboard 175.5
com.apple.iokit.IOUSBHIDDriver 705.4.0
com.apple.driver.AppleUSBMergeNub 705.4.0
com.apple.driver.AppleUSBComposite 705.4.9
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.0
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOATAPIProtocolTransport 3.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.0
com.apple.iokit.IOATAFamily 2.5.3
com.apple.iokit.IO80211Family 700.52
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOFireWireFamily 4.5.6
com.apple.iokit.IOAHCIFamily 2.7.0
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOUSBFamily 705.4.14
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleKeyStore 2
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.DiskImages 389.1
com.apple.iokit.IOStorageFamily 2.0
com.apple.iokit.IOReportFamily 31
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 3.1
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.Libm 1
com.apple.kec.pthread 1
Model: iMac8,1, BootROM IM81.00C1.B00, 2 processors, Intel Core 2 Duo, 3.06 GHz, 4 GB, SMC 1.30f1
Graphics: NVIDIA GeForce 8800 GS, NVIDIA GeForce 8800 GS, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR2 SDRAM, 800 MHz, 0xAD00000000000000, 0x48594D503132355336344352382D53362020
Memory Module: BANK 1/DIMM1, 2 GB, DDR2 SDRAM, 800 MHz, 0xAD00000000000000, 0x48594D503132355336344352382D53362020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8C), Broadcom BCM43xx 1.0 (5.10.131.36.16)
Bluetooth: Version 4.3.1f2 15015, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: Hitachi HDS721010KLA330, 1 TB
Parallel ATA Device: MATSHITADVD-R UJ-875
USB Device: Keyboard Hub
USB Device: Apple Keyboard
USB Device: Built-in iSight
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: IR Receiver
Thunderbolt Bus:
---------------------------------------------

Any help appreciated before I open her up!
 
Joined
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Sorry you are having these issues. I have never had such problems, but doing a google search of "iMac (2008) Shutting Down Randomly" brings up a number of "hits" (but not all of them are specifically about a 2008 iMac model). Quite a few of them talk about an issue with the power supply. But, there could be other things wrong.

First, wonder how old the Hare Drive is. If it is the original one, it could be going bad, as it is now 6 to 7 years old. Try running Disk Utility to Verify the disk, and if necessary, repair it.

Another thing I saw mentioned a couple of times is to reset the SMC (System Management Controller). To do that:

1. Turn the computer off.

2. Unplug all cables from the computer, including the power cable and any external device cables.

3. Wait 30 seconds.

4. Plug the computer back in and connect the keyboard/mouse, then turn it back on.

Hope that helps!
 
Last edited:

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