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i face today this message each booting time :
"You shut downyour computer because of a problem"

here is the problem report : Anonymous UUID: CCA2BFFF-A2B3-27DF-9EAA-E50F09D8FA42

Sun Jul 14 08:14:30 2019

*** Panic Report ***
panic(cpu 8 caller 0xffffff7f9bc20b83): CPU 15 has no HPET assigned to it
Backtrace (CPU 8), Frame : Return Address
0xffffff83b5a3bcb0 : 0xffffff80191fc36d
0xffffff83b5a3bd00 : 0xffffff801934efa3
0xffffff83b5a3bd40 : 0xffffff801933fa72
0xffffff83b5a3bdb0 : 0xffffff801919cc90
0xffffff83b5a3bdd0 : 0xffffff80191fbdf7
0xffffff83b5a3bef0 : 0xffffff80191fbc43
0xffffff83b5a3bf60 : 0xffffff7f9bc20b83
0xffffff83b5a3bfa0 : 0xffffff801919c0ce
Kernel Extensions in backtrace:

BSD process name corresponding to current thread: kernel_task
Boot args: kcsuffix=amd npci=0x2000 -v

Mac OS version:

Kernel version:
Darwin Kernel Version 18.2.0: Sat 12 Jan 2019 20:18:25 GMT; root:xnu-4903.221.2/BUILD/obj/RELEASE_X86_64
Kernel UUID: 4305175F-CC02-322A-871E-7B9C6039385C
Kernel slide: 0x0000000018e00000
Kernel text base: 0xffffff8019000000
__HIB text base: 0xffffff8018f00000
System model name: iMac14,2 (Mac-27ADBB7B4CEE8E61)

System uptime in nanoseconds: 90829113280
last loaded kext at 34401527523: com.apple.driver.AppleGraphicsDevicePolicy 3.25.6 (addr 0xffffff7f9a53b000, size 81920)
last unloaded kext at 62995297756: com.apple.driver.AppleHPET 1.8 (addr 0xffffff7f9bd5e000, size 12288)
loaded kexts:

Model: MacPro5,1, BootROM MP51.0084.B00, 8 processors, 3.69 GHz, 32 GB, SMC 1.39f11
Graphics: NVIDIA GeForce GTX 1070, NVIDIA GeForce GTX 1070, PCIe, 8 GB
Memory Module: DIMM1, 8 GB, DDR4, 2666 MHz, G-Skill, F4-3200C16-8GTZB
Memory Module: DIMM2, 8 GB, DDR4, 2666 MHz, G-Skill, F4-3200C16-8GTZR
Memory Module: DIMM3, 8 GB, DDR4, 2666 MHz, G-Skill, F4-3200C16-8GTZB
Memory Module: DIMM4, 8 GB, DDR4, 2666 MHz, G-Skill, F4-3200C16-8GTZR
PCI Card: NVIDIA GeForce GTX 1070, Display Controller, PCI Slot 0
Serial ATA Device: WDC WD20EARX-00PASB0, 2 TB
Serial ATA Device: Samsung SSD 860 EVO 500GB, 500.11 GB
Serial ATA Device: Samsung SSD 850 EVO 250GB, 250.06 GB
Serial ATA Device: ST1000DM003-1ER162, 1 TB
USB Device: USB 3.0 Bus
USB Device: USB Device
USB Device: 11n Adapter
USB Device: USB316Bus
USB Device: Multimedia Keyboard HUB
USB Device: Multimedia Keyboard
USB Device: Xbox 360 Wireless Receiver for Windows
Thunderbolt Bus:


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