iMac won't start - but on Safe Startup received this error
*** MCA Error Report ***
CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz, CPUID: 0x306C3)
Core: 0 1
IA32_MC3_STATUS=0xBE00000000800400
IA32_MC3_CTL=0x0
IA32_MC3_ADDR=0xFFFFFF7F8DE7C033
IA32_MC3_MISC=0xFFFFFF7F8DE7C033
Core: 0
IA32_MC4_STATUS=0xFE00000000800400
IA32_MC4_CTL=0x0
IA32_MC4_ADDR=0xFFFFFF7F8DE7C033
IA32_MC4_MISC=0xFFFFFF7F8DE7C033
Core: 0
IA32_MC5_STATUS=0xEE0000000040110A
IA32_MC5_CTL=0x0
IA32_MC5_ADDR=0xFF7077C0
IA32_MC5_MISC=0x7880000086
Core: 0
IA32_MC6_STATUS=0xEE0000000040110A
IA32_MC6_CTL=0x0
IA32_MC6_ADDR=0xFF707C00
IA32_MC6_MISC=0x3880000086
Core: 0
IA32_MC7_STATUS=0xEE0000000040110A
IA32_MC7_CTL=0x0
IA32_MC7_ADDR=0xFF707740
IA32_MC7_MISC=0x7880000086
Core: 0
IA32_MC8_STATUS=0xEE0000000040110A
IA32_MC8_CTL=0x0
IA32_MC8_ADDR=0xFF707BC0
IA32_MC8_MISC=0x3880000086
Core: 2 3
IA32_MC3_STATUS=0xBE00000000800400
IA32_MC3_CTL=0x0
IA32_MC3_ADDR=0xFFFFFF7F8C897636
IA32_MC3_MISC=0xFFFFFF7F8C897636
Core: 4 5
IA32_MC3_STATUS=0xBE00000000800400
IA32_MC3_CTL=0x0
IA32_MC3_ADDR=0xFFFFFF800EF3F455
IA32_MC3_MISC=0xFFFFFF800EF3F455
Core: 6 7
IA32_MC3_STATUS=0xBE00000000800400
IA32_MC3_CTL=0x0
IA32_MC3_ADDR=0xFFFFFF7F8BF273F2
IA32_MC3_MISC=0xFFFFFF7F8BF273F2
Model: iMac15,1, BootROM IM151.0207.B00, 4 processors, Intel Core i7, 4 GHz, 16 GB, SMC 2.23f11
Graphics: AMD Radeon R9 M295X, AMD Radeon R9 M295X, PCIe, 4096 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533641465238412D50422020
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533641465238412D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x142), Broadcom BCM43xx 1.0 (7.15.124.12.10)
Bluetooth: Version 4.3.1f2 15015, 3 services, 27 devices, 0 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE SSD SD0128F, 121.33 GB
Serial ATA Device: APPLE HDD ST3000DM001, 3 TB
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: FaceTime HD Camera (Built-in)
Thunderbolt Bus: iMac, Apple Inc., 26.1
