Thanks - my machine just restarted randomly and here's the apple error report:
Anonymous UUID: 7138951B-79A5-2A2E-A0C6-4EE464ACF42C
Mon May 29 09:36:27 2017
*** Panic Report ***
Machine-check capabilities: 0x0000000000000c0a
family: 6 model: 94 stepping: 3 microcode: 132
signature: 0x506e3
Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
10 error-reporting banks
Processor 0: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC4_STATUS(0x411): 0xba00000011000402
IA32_MC4_MISC(0x413): 0x0000000000000000
Processor 1: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC4_STATUS(0x411): 0xba00000011000402
IA32_MC4_MISC(0x413): 0x0000000000000000
panic(cpu 0 caller 0xffffff8011c01d15): "Machine Check at 0xffffff7f938ec126, registers:\n" "CR0: 0x000000008001003b, CR2: 0x0000700007361ef0, CR3: 0x0000000019f18000, CR4: 0x00000000003627e0\n" "RAX: 0x0000000000070008, RBX: 0x0000000000070008, RCX: 0x0000000001000000, RDX: 0x0000000080000000\n" "RSP: 0xffffff93b72eb480, RBP: 0xffffff93b72eb480, RSI: 0x0000000000070008, RDI: 0xffffff834a9d5000\n" "R8: 0xffffff80508cb310, R9: 0x0000000000000080, R10: 0x0000000000000008, R11: 0x0000000008d9ee20\n" "R12: 0xffffff8050167f00, R13: 0x0000000000060400, R14: 0xffffff834a9d5000, R15: 0xffffff834acd7000\n" "RFL: 0x0000000000000202, RIP: 0xffffff7f938ec126, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/Library/Caches/com.apple.xbs/Sources/xnu/xnu-3789.51.2/osfmk/i386/trap_native.c:168
Backtrace (CPU 0), Frame : Return Address
0xffffff838b2decf0 : 0xffffff8011aec3ec
0xffffff838b2ded70 : 0xffffff8011c01d15
0xffffff838b2deed0 : 0xffffff8011a9dddf
0xffffff93b72eb480 : 0xffffff7f938fecfc
0xffffff93b72eb4e0 : 0xffffff7f93908618
0xffffff93b72eb510 : 0xffffff7f93903539
0xffffff93b72ebc70 : 0xffffff7f938d09e3
0xffffff93b72ebd60 : 0xffffff7f938e0664
0xffffff93b72ebdb0 : 0xffffff7f938e09ee
0xffffff93b72ebe00 : 0xffffff7f93001ccf
0xffffff93b72ebe40 : 0xffffff7f93000e6a
0xffffff93b72ebe80 : 0xffffff7f92ffcb55
0xffffff93b72ebee0 : 0xffffff80120bcfaf
0xffffff93b72ebf30 : 0xffffff80120bb811
0xffffff93b72ebf80 : 0xffffff80120badf6
0xffffff93b72ebfb0 : 0xffffff8011a9a8f7
Kernel Extensions in backtrace:
com.apple.iokit.IOGraphicsFamily(514.10)[E197EF14-F55B-3B9C-B903-91258C9CA382]@0xffffff7f92ff1000->0xffffff7f9302cfff
dependency: com.apple.iokit.IOPCIFamily(2.9)[C6E3195E-A0D7-3B71-B5F4-9EE9E182D4FC]@0xffffff7f9224f000
com.apple.driver.AppleIntelSKLGraphicsFramebuffer(10.2.4)[AC8B18BD-271B-3170-BA8C-8D41466A9C4A]@0xffffff7f938c4000->0xffffff7f93a8efff
dependency: com.apple.iokit.IOPCIFamily(2.9)[C6E3195E-A0D7-3B71-B5F4-9EE9E182D4FC]@0xffffff7f9224f000
dependency: com.apple.iokit.IOACPIFamily(1.4)[4F7FB6AD-2498-3F71-827C-ED7AA4BF2511]@0xffffff7f92242000
dependency: com.apple.iokit.IOAcceleratorFamily2(311.11)[41BE9F49-4998-3297-9EF6-9972DD38B09E]@0xffffff7f93819000
dependency: com.apple.iokit.IOReportFamily(31)[B14DC3D3-7250-3DA3-BF50-C666EBEDAF4C]@0xffffff7f92f4f000
dependency: com.apple.AppleGraphicsDeviceControl(3.14.41)[781CA97C-27C8-35C2-BDF3-44C535394021]@0xffffff7f938b8000
dependency: com.apple.iokit.IOGraphicsFamily(514.10)[E197EF14-F55B-3B9C-B903-91258C9CA382]@0xffffff7f92ff1000
BSD process name corresponding to current thread: kernel_task
Boot args: dart=0
Mac OS version:
16E195
Kernel version:
Darwin Kernel Version 16.5.0: Fri Mar 3 16:52:33 PST 2017; root:xnu-3789.51.2~3/RELEASE_X86_64
Kernel UUID: 06F94FD7-451F-34A1-B13C-D68FF7EDE0A0
Kernel slide: 0x0000000011800000
Kernel text base: 0xffffff8011a00000
__HIB text base: 0xffffff8011900000
System model name: iMac14,2 (Mac-27ADBB7B4CEE8E61)
System uptime in nanoseconds: 647342459160
last loaded kext at 243568697497: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7f93e9d000, size 69632)
last unloaded kext at 303738496991: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7f93e9d000, size 61440)
loaded kexts:
com.insanelymac.IntelMausiEthernet 2.2.1d1
net.osx86.kexts.GenericUSBXHCI 1.2.11
org.netkas.driver.FakeSMC 1758
com.rehabman.driver.USBInjectAll 0.5.17
com.apple.driver.AppleUpstreamUserClient 3.6.4
com.apple.driver.AppleMCCSControl 1.3.1
com.apple.filesystems.autofs 3.0
com.apple.driver.pmtelemetry 1
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.iokit.IOBluetoothSerialManager 5.0.4f18
com.apple.driver.AppleIntelSKLGraphics 10.2.4
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleIntelPCHPMC 1.1
com.apple.driver.AppleHV 1
com.apple.driver.AppleOSXWatchdog 1
com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0
com.apple.driver.AppleIntelSKLGraphicsFramebuffer 10.2.4
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0
com.apple.BootCache 40
com.apple.filesystems.hfs.kext 366.50.19
com.apple.driver.AppleUSBLegacyHub 900.4.1
com.apple.iokit.IOAHCIBlockStorage 295.20.1
com.apple.driver.AppleAHCIPort 326
com.apple.driver.AppleACPIButtons 5.0
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIEC 5.0
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleAPIC 1.7
com.apple.nke.applicationfirewall 172
com.apple.security.quarantine 3
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleSMBusController 1.0.18d1
com.apple.kext.triggers 1.0
com.apple.iokit.IOBluetoothFamily 5.0.4f18
com.apple.iokit.IOSurface 159.6
com.apple.driver.AppleSSE 1.0
com.apple.vecLib.kext 1.2.0
com.apple.iokit.IOUSBHIDDriver 900.4.1
com.apple.iokit.IOSerialFamily 11
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.AppleGraphicsDeviceControl 3.14.41
com.apple.iokit.IOAcceleratorFamily2 311.11
com.apple.iokit.IOGraphicsFamily 514.10
com.apple.driver.AppleSMC 3.1.9
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 6.0.0d8
com.apple.iokit.IOSCSIBlockCommandsDevice 394.50.1
com.apple.iokit.IOUSBMassStorageDriver 131.50.1
com.apple.iokit.IOSCSIArchitectureModelFamily 394.50.1
com.apple.driver.usb.IOUSBHostHIDDevice 1.1
com.apple.driver.usb.networking 5.0.0
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.1
com.apple.filesystems.hfs.encodings.kext 1
com.apple.iokit.IONetworkingFamily 3.2
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.iokit.IOAHCIFamily 288
com.apple.iokit.IOUSBFamily 900.4.1
com.apple.driver.usb.AppleUSBXHCIPCI 1.1
com.apple.driver.usb.AppleUSBXHCI 1.1
com.apple.driver.AppleEFINVRAM 2.1
com.apple.driver.AppleEFIRuntime 2.0
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.KernelRelayHost 1
com.apple.iokit.IOUSBHostFamily 1.1
com.apple.driver.AppleBusPowerController 1.0
com.apple.driver.DiskImages 444.50.16
com.apple.iokit.IOStorageFamily 2.1
com.apple.iokit.IOReportFamily 31
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 5.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.Libm 1
com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0
Model: iMac14,2, BootROM IM142.0118.B00, 4 processors, Intel Core i7, 4.01 GHz, 32 GB, SMC 2.15f7
Graphics: Intel HD Graphics 530, Intel HD Graphics 530, Built-In
Memory Module: BANK 0/DIMM0, 16 GB, DDR4, 2133 MHz, G Skill Intl, F4-3200C14-16GTZKW
Memory Module: BANK 1/DIMM0, 16 GB, DDR4, 2133 MHz, G Skill Intl, F4-3200C14-16GTZKW
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: Samsung SSD 850 EVO 500GB, 500.11 GB
Serial ATA Device: Samsung SSD 850 EVO 1TB, 1 TB
USB Device: USB 3.0 Bus
USB Device: Cruzer Blade
USB Device: USB Receiver
Thunderbolt Bus: