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"Your computer restarted because of a problem."

"Your computer restarted because of a problem" is the message we get every time our computer randomly shuts down and restarts.

Series of events, spanning about 2 months:

We installed new RAM, a week or two later it begins to restart in the manner above. Seldom at first, but then occurances increase.

Eventually our computer shuts down and will not reboot.

We take it in to get service and are told our hard drive is failing.

We had a new hard drive installed.

Upon returning home with the computer, it has restarted in the same manner as above 3 times within a 12 hour period.

We tried removing the new RAM to see if that made it difference, it didn't.


What could be causing the computer to restart like this? What can we do to fix it?!?


Thanks for your time!


Here is the error report from the most recent incident:


Interval Since Last Panic Report: 15736 sec

Panics Since Last Report: 2

Anonymous UUID: AFDBEF61-025B-7D11-41AA-F785250EA35C

Sat Sep 14 08:27:56 2013

panic(cpu 0 caller 0xffffff8018c444db): "a freed zone element has been modified in zone: buf.8192"@/SourceCache/xnu/xnu-2050.48.11/osfmk/kern/zalloc.c:214

Backtrace (CPU 0), Frame : Return Address

0xffffff817853ad60 : 0xffffff8018c1d636

0xffffff817853add0 : 0xffffff8018c444db

0xffffff817853ae10 : 0xffffff8018c43d52

0xffffff817853aef0 : 0xffffff8018ce58f8

0xffffff817853af40 : 0xffffff8018ce53b5

0xffffff817853aff0 : 0xffffff8018ce466b

0xffffff817853b020 : 0xffffff8018ce4817

0xffffff817853b040 : 0xffffff8018eef296

0xffffff817853b0b0 : 0xffffff8018f27dfc

0xffffff817853b0d0 : 0xffffff8018f28ec4

0xffffff817853b170 : 0xffffff8018f24e50

0xffffff817853b280 : 0xffffff8018ef523b

0xffffff817853b8a0 : 0xffffff8018f1fe36

0xffffff817853b9a0 : 0xffffff8018d1a56e

0xffffff817853b9f0 : 0xffffff8018d08915

0xffffff817853bf20 : 0xffffff8018d08cfa

0xffffff817853bf50 : 0xffffff8018fe97ba

0xffffff817853bfb0 : 0xffffff8018ccf453

BSD process name corresponding to current thread: backupd

Mac OS version:

12F37

Kernel version:

Darwin Kernel Version 12.5.0: Mon Jul 29 16:33:49 PDT 2013; root:xnu-2050.48.11~1/RELEASE_X86_64

Kernel UUID: B1B58405-A2B2-3C44-B25D-495053D52AB5

Kernel slide: 0x0000000018a00000

Kernel text base: 0xffffff8018c00000

System model name: iMac10,1 (Mac-F2268CC8)

System uptime in nanoseconds: 10226609824947

last loaded kext at 2079299858316: com.apple.filesystems.afpfs 10.0 (addr 0xffffff7f9ad23000, size 348160)

last unloaded kext at 167806650488: com.apple.driver.AppleFileSystemDriver 3.0.1 (addr 0xffffff7f9ac1a000, size 8192)

loaded kexts:

com.apple.filesystems.afpfs 10.0

com.apple.nke.asp_tcp 7.1.0

com.apple.driver.AppleBluetoothMultitouch 75.19

com.apple.iokit.IOBluetoothSerialManager 4.1.7f2

com.apple.filesystems.autofs 3.0

com.apple.driver.AudioAUUC 1.60

com.apple.driver.AGPM 100.13.12

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleHDA 2.4.7fc2

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.1.7f2

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.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleMikeyDriver 2.4.7fc2

com.apple.driver.AppleSMBusPCI 1.0.11d1

com.apple.driver.AppleLPC 1.6.3

com.apple.driver.AppleBacklight 170.3.5

com.apple.driver.AppleUpstreamUserClient 3.5.12

com.apple.driver.AppleMCCSControl 1.1.11

com.apple.kext.AMDFramebuffer 8.1.6

com.apple.ATIRadeonX2000 8.1.6

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 34

com.apple.driver.AppleIRController 320.15

com.apple.driver.AppleUSBCardReader 3.3.1

com.apple.iokit.SCSITaskUserClient 3.5.6

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.3.5

com.apple.driver.AirPort.Atheros40 600.72.2

com.apple.driver.AppleFWOHCI 4.9.9

com.apple.driver.AppleUSBHub 623.4.4

com.apple.nvenet 2.0.19

com.apple.driver.AppleAHCIPort 2.6.6

com.apple.driver.AppleUSBEHCI 621.4.6

com.apple.driver.AppleUSBOHCI 621.4.0

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleACPIButtons 1.8

com.apple.driver.AppleSMBIOS 1.9

com.apple.driver.AppleACPIEC 1.8

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 214.0.0

com.apple.nke.applicationfirewall 4.0.39

com.apple.security.quarantine 2.1

com.apple.driver.AppleIntelCPUPowerManagement 214.0.0

com.apple.security.SecureRemotePassword 1.0

com.apple.driver.AppleBluetoothHIDKeyboard 170.2.4

com.apple.driver.AppleHIDKeyboard 170.2.4

com.apple.driver.IOBluetoothHIDDriver 4.1.7f2

com.apple.driver.AppleMultitouchDriver 237.4

com.apple.iokit.IOSerialFamily 10.0.6

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 2.4.7fc2

com.apple.iokit.IOAudioFamily 1.9.2fc7

com.apple.kext.OSvKernDSPLib 1.12

com.apple.iokit.IOFireWireIP 2.2.5

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.1.7f2

com.apple.iokit.IOSurface 86.0.4

com.apple.iokit.IOBluetoothFamily 4.1.7f2

com.apple.driver.AppleHDAController 2.4.7fc2

com.apple.iokit.IOHDAFamily 2.4.7fc2

com.apple.driver.AppleSMC 3.1.5d4

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.4.1d11

com.apple.driver.AppleGraphicsControl 3.4.5

com.apple.driver.AppleBacklightExpert 1.0.4

com.apple.driver.AppleSMBusController 1.0.11d1

com.apple.iokit.IONDRVSupport 2.3.7

com.apple.kext.AMD4600Controller 8.1.6

com.apple.kext.AMDSupport 8.1.6

com.apple.iokit.IOGraphicsFamily 2.3.7

com.apple.iokit.IOUSBHIDDriver 623.4.0

com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.6

com.apple.iokit.IOUSBMassStorageClass 3.5.2

com.apple.driver.AppleUSBMergeNub 621.4.6

com.apple.driver.AppleUSBComposite 621.4.0

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.6

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.iokit.IOAHCISerialATAPI 2.5.5

com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.6

com.apple.iokit.IO80211Family 530.5

com.apple.iokit.IOFireWireFamily 4.5.5

com.apple.iokit.IOUSBUserClient 630.4.4

com.apple.iokit.IONetworkingFamily 3.0

com.apple.driver.AppleEFINVRAM 2.0

com.apple.iokit.IOAHCIFamily 2.5.1

com.apple.iokit.IOUSBFamily 630.4.5

com.apple.driver.NVSMU 2.2.9

com.apple.driver.AppleEFIRuntime 2.0

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 1.8

com.apple.iokit.IOPCIFamily 2.8

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.corecrypto 1.0

Model: iMac10,1, BootROM IM101.00CC.B00, 2 processors, Intel Core 2 Duo, 3.06 GHz, 12 GB, SMC 1.52f9

Graphics: ATI Radeon HD 4670, ATI Radeon HD 4670, PCIe, 256 MB

Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x85F7, 0x483634353155373946373036364700000000

Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1067 MHz, 0x85F7, 0x483634353155373946373036364700000000

Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1067 MHz, 0x802C, 0x31364A53463235363634485A2D3147314631

Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1067 MHz, 0x802C, 0x31364A53463235363634485A2D3147314631

AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.72.0-P2P

Bluetooth: Version 4.1.7f2 12718, 3 service, 21 devices, 3 incoming serial ports

Network Service: Ethernet, Ethernet, en0

Network Service: AirPort, AirPort, en1

Serial ATA Device: WDC WD2002FAEX-007BA0, 2 TB

Serial ATA Device: HL-DT-ST DVDRW GA11N

USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 2

USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0x26500000 / 3

USB Device: HL-5470DW series, 0x04f9 (Brother International Corporation), 0x004c, 0x26200000 / 2

USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2

USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 / 2

USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x06110000 / 3

iMac (Intel), Mac OS X (10.5.6)

Posted on Sep 14, 2013 9:56 AM

Reply
2 replies

Sep 14, 2013 12:32 PM in response to jen4205

You've upgraded the memory modules, Reinstall the original memory and see whether there's any improvement. Be careful not to touch the gold contacts. Clean them with a mild solvent such as rubbing alcohol. Aftermarket memory must exactly match the technical specifications for your model.


The Apple Hardware Test or Apple Diagnostics, though generally unreliable, will sometimes detect a fault. A negative test can't be depended on. Run the extended version of the test.

Sep 14, 2013 1:12 PM in response to Linc Davis

We didn't remove the original memory, just added to it. When we were getting the computer serviced we had removed the memory and then had the techs reinstall.


I'll try running the Hardware Test, but the techs said it passed all the Apple hardware diagnostics. We are waiting for a reply from them as well, these things always happen on the weekend!

"Your computer restarted because of a problem."

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