Thanks, Lawrence; the problem is hardware - I also see some WHEA errors and crash dumps.
The computer has rebooted from a bugcheck. The bugcheck was: 0x0000009f (0x0000000000000003, 0xffff8b82c4b2c060, 0xffffc18f8a05f738, 0xffff8b82e221b560). A dump was saved in: C:\Windows\Minidump\072923-8531-01.dmp. Report Id: c81fdf87-963e-4f6a-aeb2-8492a1cb463d.
A corrected hardware error has occurred.
Component: PCI Express Root Port
Error Source: Advanced Error Reporting (PCI Express)
Primary Bus:Device:Function: 0x0:0x1C:0x0
Secondary Bus:Device:Function: 0x0:0x0:0x0
Primary Device Name:PCI\VEN_8086&DEV_7ABC&SUBSYS_0BBF1028&REV_11
Secondary Device Name:
Can you share some minidump files from:
C:\Windows\Minidump\ to find the root cause?