Macbook Keeps restarting

Question

Hi everybody!I&#x27;m still having problems with my macbook pro 15" mid 2012.It keeps restarting randomly... there&#x27;s no pattern at all... no specific application...Here&#x27;s my last 2 reports... I hope someone can help.Tks.------------Interval Since Last Panic Report:  -51 secPanics Since Last Report:          1Anonymous UUID:                    58516091-8CAF-7384-4562-99A443ABC659Sat Jul 13 09:29:10 2013panic(cpu 2 caller 0xffffff80224b8655): Kernel trap at 0xffffff80226ef170, type 14&#x3D;page fault, registers:CR0: 0x000000008001003b, CR2: 0xffffff9d4ef4aad0, CR3: 0x0000000042b9d020, CR4: 0x00000000001606e0RAX: 0xffffff8045580850, RBX: 0xffffff8043614808, RCX: 0x0000000009000000, RDX: 0xffffff8043614de0RSP: 0xffffff81f3b7bbc0, RBP: 0xffffff81f3b7bc00, RSI: 0x00000000000072a6, RDI: 0xffffff8043614de0R8:  0x0000000000000000, R9:  0x0000000000000000, R10: 0xffffff8047b1203e, R11: 0x0000000000000002R12: 0xffffff8043614de0, R13: 0x00000000000072a6, R14: 0x00000000000072a6, R15: 0xffffff9d4ef4aa48RFL: 0x0000000000010286, RIP: 0xffffff80226ef170, CS:  0x0000000000000008, SS:  0x0000000000000010Fault CR2: 0xffffff9d4ef4aad0, Error code: 0x0000000000000000, Fault CPU: 0x2Backtrace (CPU 2), Frame : Return Address0xffffff81f3b7b860 : 0xffffff802241d626 0xffffff81f3b7b8d0 : 0xffffff80224b8655 0xffffff81f3b7baa0 : 0xffffff80224ce17d 0xffffff81f3b7bac0 : 0xffffff80226ef170 0xffffff81f3b7bc00 : 0xffffff80226e6866 0xffffff81f3b7be00 : 0xffffff8022513246 0xffffff81f3b7be60 : 0xffffff8022501f1a 0xffffff81f3b7bf50 : 0xffffff80227e16aa 0xffffff81f3b7bfb0 : 0xffffff80224ce9c3 BSD process name corresponding to current thread: mdsMac OS version:12E55Kernel version:Darwin Kernel Version 12.4.0: Wed May  1 17:57:12 PDT 2013; root:xnu-2050.24.15~1/RELEASE_X86_64Kernel UUID: 896CB1E3-AB79-3DF1-B595-549DFFDF3D36Kernel slide:     0x0000000022200000Kernel text base: 0xffffff8022400000System model name: MacBookPro9,1 (Mac-4B7AC7E43945597E)System uptime in nanoseconds: 162743340368last loaded kext at 43265620317: com.apple.driver.AppleBluetoothMultitouch    75.19 (addr 0xffffff7fa46c1000, size 77824)loaded kexts:com.apple.driver.AppleBluetoothMultitouch    75.19com.apple.driver.AppleHWSensor    1.9.5d0com.apple.iokit.IOBluetoothSerialManager    4.1.4f2com.apple.filesystems.autofs    3.0com.apple.driver.AudioAUUC    1.60com.apple.driver.AGPM    100.12.87com.apple.driver.ApplePlatformEnabler    2.0.6d1com.apple.driver.X86PlatformShim    1.0.0com.apple.driver.AppleMikeyHIDDriver    122com.apple.driver.AppleHDAHardwareConfigDriver    2.3.7fc4com.apple.driver.AppleHDA    2.3.7fc4com.apple.driver.AppleUpstreamUserClient    3.5.10com.apple.GeForce    8.1.2com.apple.iokit.IOUserEthernet    1.0.0d1com.apple.driver.AppleMikeyDriver    2.3.7fc4com.apple.iokit.IOBluetoothUSBDFU    4.1.4f2com.apple.driver.AppleIntelHD4000Graphics    8.1.2com.apple.Dont_Steal_Mac_OS_X    7.0.0com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport    4.1.4f2com.apple.driver.SMCMotionSensor    3.0.3d1com.apple.driver.ACPI_SMC_PlatformPlugin    1.0.0com.apple.driver.AppleLPC    1.6.0com.apple.driver.AppleSMCPDRC    1.0.0com.apple.driver.AppleSMCLMU    2.0.3d0com.apple.nvidia.NVDAStartup    8.1.2com.apple.driver.ApplePolicyControl    3.4.5com.apple.driver.AppleIntelFramebufferCapri    8.1.2com.apple.driver.AppleMuxControl    3.4.5com.apple.driver.AppleBacklight    170.2.5com.apple.driver.AppleMCCSControl    1.1.11com.apple.driver.AppleUSBTCButtons    237.1com.apple.driver.AppleUSBTCKeyEventDriver    237.1com.apple.driver.AppleUSBTCKeyboard    237.1com.apple.driver.AppleIRController    320.15com.apple.driver.AppleFileSystemDriver    3.0.1com.apple.AppleFSCompression.AppleFSCompressionTypeDataless    1.0.0d1com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1com.apple.BootCache    34com.apple.iokit.SCSITaskUserClient    3.5.5com.apple.driver.XsanFilter    404com.apple.iokit.IOAHCIBlockStorage    2.3.1com.apple.driver.AirPort.Brcm4331    615.20.17com.apple.driver.AppleSDXC    1.4.2com.apple.iokit.AppleBCM5701Ethernet    3.6.1b4com.apple.driver.AppleUSBHub    5.5.5com.apple.driver.AppleFWOHCI    4.9.6com.apple.driver.AppleAHCIPort    2.5.2com.apple.driver.AppleUSBEHCI    5.5.0com.apple.driver.AppleUSBXHCI    5.6.0com.apple.driver.AppleEFINVRAM    1.7com.apple.driver.AppleSmartBatteryManager    161.0.0com.apple.driver.AppleACPIButtons    1.7com.apple.driver.AppleRTC    1.5com.apple.driver.AppleHPET    1.8com.apple.driver.AppleSMBIOS    1.9com.apple.driver.AppleACPIEC    1.7com.apple.driver.AppleAPIC    1.6com.apple.driver.AppleIntelCPUPowerManagementClient    196.0.0com.apple.nke.applicationfirewall    4.0.39com.apple.security.quarantine    2.1com.apple.driver.AppleIntelCPUPowerManagement    196.0.0com.apple.driver.IOBluetoothHIDDriver    4.1.4f2com.apple.driver.AppleMultitouchDriver    235.29com.apple.iokit.IOSerialFamily    10.0.6com.apple.kext.triggers    1.0com.apple.driver.DspFuncLib    2.3.7fc4com.apple.iokit.IOAudioFamily    1.8.9fc11com.apple.kext.OSvKernDSPLib    1.6com.apple.nvidia.gk100hal    8.1.2com.apple.NVDAResman    8.1.2com.apple.iokit.IOSurface    86.0.4com.apple.iokit.IOBluetoothFamily    4.1.4f2com.apple.iokit.IOAcceleratorFamily    74.5.1com.apple.iokit.AppleBluetoothHCIControllerUSBTransport    4.1.4f2com.apple.driver.IOPlatformPluginLegacy    1.0.0com.apple.driver.AppleSMBusPCI    1.0.11d0com.apple.driver.AppleHDAController    2.3.7fc4com.apple.iokit.IOHDAFamily    2.3.7fc4com.apple.iokit.IOFireWireIP    2.2.5com.apple.driver.AppleGraphicsControl    3.4.5com.apple.driver.AppleBacklightExpert    1.0.4com.apple.iokit.IONDRVSupport    2.3.7com.apple.driver.AppleSMBusController    1.0.11d0com.apple.iokit.IOGraphicsFamily    2.3.7com.apple.driver.X86PlatformPlugin    1.0.0com.apple.driver.AppleSMC    3.1.4d2com.apple.driver.IOPlatformPluginFamily    5.3.0d51com.apple.driver.AppleThunderboltEDMSink    1.1.8com.apple.driver.AppleThunderboltEDMSource    1.1.8com.apple.driver.AppleThunderboltDPOutAdapter    1.8.9com.apple.driver.AppleUSBMultitouch    237.3com.apple.iokit.IOUSBHIDDriver    5.2.5com.apple.driver.AppleThunderboltDPInAdapter    1.8.9com.apple.driver.AppleThunderboltDPAdapterFamily    1.8.9com.apple.driver.AppleThunderboltPCIDownAdapter    1.2.6com.apple.driver.AppleUSBMergeNub    5.5.5com.apple.driver.AppleUSBComposite    5.2.5com.apple.iokit.IOSCSIMultimediaCommandsDevice    3.5.5com.apple.iokit.IOBDStorageFamily    1.7com.apple.iokit.IODVDStorageFamily    1.7.1com.apple.iokit.IOCDStorageFamily    1.7.1com.apple.iokit.IOAHCISerialATAPI    2.5.1com.apple.iokit.IOSCSIArchitectureModelFamily    3.5.5com.apple.driver.AppleThunderboltNHI    1.7.8com.apple.iokit.IOThunderboltFamily    2.4.0com.apple.iokit.IO80211Family    530.4com.apple.iokit.IOEthernetAVBController    1.0.2b1com.apple.iokit.IONetworkingFamily    3.0com.apple.iokit.IOFireWireFamily    4.5.5com.apple.iokit.IOUSBUserClient    5.5.5com.apple.iokit.IOAHCIFamily    2.3.1com.apple.iokit.IOUSBFamily    5.6.0com.apple.driver.AppleEFIRuntime    1.7com.apple.iokit.IOHIDFamily    1.8.1com.apple.iokit.IOSMBusFamily    1.1com.apple.security.sandbox    220.3com.apple.kext.AppleMatch    1.0.0d1com.apple.security.TMSafetyNet    7com.apple.driver.DiskImages    345com.apple.iokit.IOStorageFamily    1.8com.apple.driver.AppleKeyStore    28.21com.apple.driver.AppleACPIPlatform    1.7com.apple.iokit.IOPCIFamily    2.7.3com.apple.iokit.IOACPIFamily    1.4com.apple.kec.corecrypto    1.0System Profile:Model: MacBookPro9,1, BootROM MBP91.00D3.B08, 4 processors, Intel Core i7, 2.3 GHz, 16 GB, SMC 2.1f170Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 384 MBGraphics: NVIDIA GeForce GT 650M, NVIDIA GeForce GT 650M, PCIe, 512 MBMemory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (5.106.98.100.17)Bluetooth: Version 4.1.4f2 12041, 2 service, 18 devices, 1 incoming serial portsNetwork Service: Wi-Fi, AirPort, en1Serial ATA Device: TOSHIBA MK5065GSXF, 500,11 GBSerial ATA Device: HL-DT-ST DVDRW  GS31NUSB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1a100000 / 2USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8509, 0x1a110000 / 3USB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1d100000 / 2USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0x1d180000 / 3USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x1d182000 / 6USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0252, 0x1d183000 / 5USB Device: BRCM20702 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x1d181000 / 4USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821d, 0x1d181300 / 9----------Interval Since Last Panic Report:  63104 secPanics Since Last Report:          1Anonymous UUID:                    58516091-8CAF-7384-4562-99A443ABC659Sat Jul 13 09:26:14 2013panic(cpu 0 caller 0xffffff802e0b8655): Kernel trap at 0xffffff802e0ad160, type 14&#x3D;page fault, registers:CR0: 0x0000000080010033, CR2: 0xffffff0055ad6fd0, CR3: 0x0000000145760064, CR4: 0x00000000001606e0RAX: 0xffffff802e6bcb60, RBX: 0xffffff8055e0f220, RCX: 0x0000000008e30000, RDX: 0x0000000000000050RSP: 0xffffff81fe4bbd08, RBP: 0xffffff81fe4bbd30, RSI: 0x0000000065000000, RDI: 0xffffff0055ad6fd0R8:  0xfffffffffffff000, R9:  0xffffff80519ac3b0, R10: 0x0000000104af7000, R11: 0x00000000ffffff00R12: 0x0000000000000000, R13: 0xffffff802e6bcb60, R14: 0xffffff0055ad6fd0, R15: 0xffffff0055ad6fc0RFL: 0x0000000000010203, RIP: 0xffffff802e0ad160, CS:  0x0000000000000008, SS:  0x0000000000000010Fault CR2: 0xffffff0055ad6fd0, Error code: 0x0000000000000000, Fault CPU: 0x0Backtrace (CPU 0), Frame : Return Address0xffffff81fe4bb9a0 : 0xffffff802e01d626 0xffffff81fe4bba10 : 0xffffff802e0b8655 0xffffff81fe4bbbe0 : 0xffffff802e0ce17d 0xffffff81fe4bbc00 : 0xffffff802e0ad160 0xffffff81fe4bbd30 : 0xffffff802e0759b0 0xffffff81fe4bbd70 : 0xffffff802e06737c 0xffffff81fe4bbe60 : 0xffffff802e06b0e0 0xffffff81fe4bbe90 : 0xffffff802e035d03 0xffffff81fe4bbed0 : 0xffffff802e3566d7 0xffffff81fe4bbf40 : 0xffffff802e356479 0xffffff81fe4bbf50 : 0xffffff802e3e16aa 0xffffff81fe4bbfb0 : 0xffffff802e0ce9c3 BSD process name corresponding to current thread: AddressBookManagMac OS version:12E55Kernel version:Darwin Kernel Version 12.4.0: Wed May  1 17:57:12 PDT 2013; root:xnu-2050.24.15~1/RELEASE_X86_64Kernel UUID: 896CB1E3-AB79-3DF1-B595-549DFFDF3D36Kernel slide:     0x000000002de00000Kernel text base: 0xffffff802e000000System model name: MacBookPro9,1 (Mac-4B7AC7E43945597E)System uptime in nanoseconds: 6175455419339last loaded kext at 286635170323: com.apple.filesystems.smbfs    1.8.4 (addr 0xffffff7fb03a5000, size 229376)last unloaded kext at 437445355951: com.apple.filesystems.msdosfs    1.8.1 (addr 0xffffff7fb0397000, size 57344)loaded kexts:com.apple.filesystems.smbfs    1.8.4com.apple.driver.AppleBluetoothMultitouch    75.19com.apple.driver.AppleHWSensor    1.9.5d0com.apple.iokit.IOBluetoothSerialManager    4.1.4f2com.apple.driver.AudioAUUC    1.60com.apple.filesystems.autofs    3.0com.apple.driver.AGPM    100.12.87com.apple.driver.AppleMikeyHIDDriver    122com.apple.driver.X86PlatformShim    1.0.0com.apple.driver.AppleHDA    2.3.7fc4com.apple.driver.AppleUpstreamUserClient    3.5.10com.apple.GeForce    8.1.2com.apple.iokit.IOUserEthernet    1.0.0d1com.apple.driver.AppleMikeyDriver    2.3.7fc4com.apple.driver.AppleIntelHD4000Graphics    8.1.2com.apple.Dont_Steal_Mac_OS_X    7.0.0com.apple.driver.AppleMuxControl    3.4.5com.apple.driver.AppleSMCLMU    2.0.3d0com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport    4.1.4f2com.apple.driver.AppleSMCPDRC    1.0.0com.apple.driver.ApplePolicyControl    3.4.5com.apple.driver.AppleLPC    1.6.0com.apple.driver.AppleMCCSControl    1.1.11com.apple.driver.AppleIntelFramebufferCapri    8.1.2com.apple.driver.SMCMotionSensor    3.0.3d1com.apple.driver.AppleUSBTCButtons    237.1com.apple.driver.AppleUSBTCKeyboard    237.1com.apple.driver.AppleIRController    320.15com.apple.AppleFSCompression.AppleFSCompressionTypeDataless    1.0.0d1com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1com.apple.BootCache    34com.apple.iokit.SCSITaskUserClient    3.5.5com.apple.driver.XsanFilter    404com.apple.iokit.IOAHCIBlockStorage    2.3.1com.apple.driver.AppleUSBHub    5.5.5com.apple.driver.AppleSDXC    1.4.2com.apple.iokit.AppleBCM5701Ethernet    3.6.1b4com.apple.driver.AirPort.Brcm4331    615.20.17com.apple.driver.AppleFWOHCI    4.9.6com.apple.driver.AppleAHCIPort    2.5.2com.apple.driver.AppleUSBEHCI    5.5.0com.apple.driver.AppleUSBXHCI    5.6.0com.apple.driver.AppleEFINVRAM    1.7com.apple.driver.AppleSmartBatteryManager    161.0.0com.apple.driver.AppleACPIButtons    1.7com.apple.driver.AppleRTC    1.5com.apple.driver.AppleHPET    1.8com.apple.driver.AppleSMBIOS    1.9com.apple.driver.AppleACPIEC    1.7com.apple.driver.AppleAPIC    1.6com.apple.driver.AppleIntelCPUPowerManagementClient    196.0.0com.apple.nke.applicationfirewall    4.0.39com.apple.security.quarantine    2.1com.apple.driver.AppleIntelCPUPowerManagement    196.0.0com.apple.driver.IOBluetoothHIDDriver    4.1.4f2com.apple.driver.AppleMultitouchDriver    235.29com.apple.iokit.IOSerialFamily    10.0.6com.apple.kext.triggers    1.0com.apple.driver.DspFuncLib    2.3.7fc4com.apple.iokit.IOAudioFamily    1.8.9fc11com.apple.kext.OSvKernDSPLib    1.6com.apple.nvidia.gk100hal    8.1.2com.apple.NVDAResman    8.1.2com.apple.iokit.IOSurface    86.0.4com.apple.iokit.IOAcceleratorFamily    74.5.1com.apple.iokit.IOBluetoothFamily    4.1.4f2com.apple.driver.AppleHDAController    2.3.7fc4com.apple.iokit.IOHDAFamily    2.3.7fc4com.apple.iokit.AppleBluetoothHCIControllerUSBTransport    4.1.4f2com.apple.driver.AppleSMBusPCI    1.0.11d0com.apple.driver.AppleGraphicsControl    3.4.5com.apple.iokit.IOFireWireIP    2.2.5com.apple.driver.AppleBacklightExpert    1.0.4com.apple.iokit.IONDRVSupport    2.3.7com.apple.driver.AppleSMBusController    1.0.11d0com.apple.iokit.IOGraphicsFamily    2.3.7com.apple.driver.X86PlatformPlugin    1.0.0com.apple.driver.AppleSMC    3.1.4d2com.apple.driver.IOPlatformPluginFamily    5.3.0d51com.apple.driver.AppleUSBMultitouch    237.3com.apple.iokit.IOUSBHIDDriver    5.2.5com.apple.driver.AppleThunderboltDPInAdapter    1.8.9com.apple.driver.AppleThunderboltDPAdapterFamily    1.8.9com.apple.driver.AppleThunderboltPCIDownAdapter    1.2.6com.apple.driver.AppleUSBMergeNub    5.5.5com.apple.driver.AppleUSBComposite    5.2.5com.apple.iokit.IOSCSIMultimediaCommandsDevice    3.5.5com.apple.iokit.IOBDStorageFamily    1.7com.apple.iokit.IODVDStorageFamily    1.7.1com.apple.iokit.IOCDStorageFamily    1.7.1com.apple.iokit.IOAHCISerialATAPI    2.5.1com.apple.iokit.IOSCSIArchitectureModelFamily    3.5.5com.apple.driver.AppleThunderboltNHI    1.7.8com.apple.iokit.IOThunderboltFamily    2.4.0com.apple.iokit.IOEthernetAVBController    1.0.2b1com.apple.iokit.IOUSBUserClient    5.5.5com.apple.iokit.IO80211Family    530.4com.apple.iokit.IONetworkingFamily    3.0com.apple.iokit.IOFireWireFamily    4.5.5com.apple.iokit.IOAHCIFamily    2.3.1com.apple.iokit.IOUSBFamily    5.6.0com.apple.driver.AppleEFIRuntime    1.7com.apple.iokit.IOHIDFamily    1.8.1com.apple.iokit.IOSMBusFamily    1.1com.apple.security.sandbox    220.3com.apple.kext.AppleMatch    1.0.0d1com.apple.security.TMSafetyNet    7com.apple.driver.DiskImages    345com.apple.iokit.IOStorageFamily    1.8com.apple.driver.AppleKeyStore    28.21com.apple.driver.AppleACPIPlatform    1.7com.apple.iokit.IOPCIFamily    2.7.3com.apple.iokit.IOACPIFamily    1.4com.apple.kec.corecrypto    1.0System Profile:Model: MacBookPro9,1, BootROM MBP91.00D3.B08, 4 processors, Intel Core i7, 2.3 GHz, 16 GB, SMC 2.1f170Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 384 MBGraphics: NVIDIA GeForce GT 650M, NVIDIA GeForce GT 650M, PCIe, 512 MBMemory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (5.106.98.100.17)Bluetooth: Version 4.1.4f2 12041, 2 service, 18 devices, 1 incoming serial portsNetwork Service: Wi-Fi, AirPort, en1Serial ATA Device: TOSHIBA MK5065GSXF, 500,11 GBSerial ATA Device: HL-DT-ST DVDRW  GS31NUSB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1a100000 / 2USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8509, 0x1a110000 / 3USB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1d100000 / 2USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0x1d180000 / 3USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x1d182000 / 6USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0252, 0x1d183000 / 5USB Device: BRCM20702 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x1d181000 / 4USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821d, 0x1d181300 / 9

Linc Davis · Answer

That panic was not caused by third-party software. If the problem is recurrent, the possibilities are:A stale or corrupt kernel cacheA damaged OS X installationA fault in a peripheral device, if anyCorrupt non-volatile memory (NVRAM)An internal hardware fault (including incompatible memory)An obscure bug in OS XYou may already have ruled out some of these.    Rule out #1 by booting in safe mode and then rebooting as usual. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.    You can rule out #2 and #3 by reinstalling the OS and testing with non-essential peripherals disconnected and aftermarket expansion cards removed, if applicable. Sometimes a clean reinstallation (after erasing the startup volume) may solve a problem that isn&#x27;t solved by reinstalling in place, without erasing.Corrupt NVRAM, which rarely causes panics, can be ruled out by resetting it.If your model has user-replaceable memory, and you&#x27;ve upgraded the memory modules, reinstall the original memory and see whether there&#x27;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. Memory that is either slower or faster than specified may be incompatible.The Apple Hardware Test or Apple Diagnostics, though generally unreliable, will sometimes detect a fault. A negative test can&#x27;t be depended on. Run the extended version of the test.In the category of obscure bugs, reports suggest that FileVault may trigger kernel traps under some unknown conditions. Most, though not all, of these reports seem to involve booting from an aftermarket SSD. If those conditions apply to you, try deactivating FileVault.   Connecting more than one display is another reported trigger for OS X bugs.   If your system is not fully up to date, running Software Update might get you a bug fix.In rare cases, a malformed network packet from a defective router or other network device can cause panics. Such packets could also be sent deliberately by a skillful attacker. This possibility is something to consider if you run a public server that might be the target of such an attack.If none of the above applies, make a "Genius" appointment at an Apple Store to have the machine tested. You may have to leave it there for several days. There isn&#x27;t much point in doing this unless you can reproduce the panic, or if you can&#x27;t, it happens often enough that it&#x27;s likely to be repeated at the store. Otherwise you may be told that nothing is wrong.Print the first page of the panic report and bring it with you.Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you know how to restore, and you have at least  two independent backups.) Don’t erase the recovery partition, if present.Keeping your confidential data secure during hardware repair*An SSD doesn&#x27;t need to be zeroed.