Well within the PSU's wattage rating.
Next step is to power down the pc, unplug, and open the case.
Double check that all connections, card seatings, RAM seating, jumpers, etc. are all fully and firmly in place.
Plus, going back a bit: "Any error codes, warnings, or even information events in Event Viewer or Reliability History/Manager?"
These are a few of the error logs in the Event viewer:
The program obs64.exe version 0.0.0.0 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel.
Process ID: ab4
Start Time: 01d521f4f1f32113
Termination Time: 4294967295
Application Path: C:\Program Files\obs-studio\bin\64bit\obs64.exe
Report Id: 53fcc0c5-c044-4936-8ecb-5b9712658f7e
Faulting package full name:
Faulting package-relative application ID:
Hang type: Top level window is idle
The program Windscribe.exe version 1.83.1.20 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel.
Process ID: 2768
Start Time: 01d521f090b47371
Termination Time: 4294967295
Application Path: C:\Program Files (x86)\Windscribe\Windscribe.exe
Report Id: 3666d8e5-58f2-4ac9-b35d-570f7a6b9512
Faulting package full name:
Faulting package-relative application ID:
Hang type: Top level window is idle
The program mbam.exe version 3.1.0.1807 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel.
Process ID: a20
Start Time: 01d521502ba8d1f3
Termination Time: 4294967295
Application Path: C:\Program Files\Malwarebytes\Anti-Malware\mbam.exe
Report Id: df34889e-3ad8-4c92-9024-599388b0042f
Faulting package full name:
Faulting package-relative application ID:
Hang type: Top level window is idle
and theres more in the reliability history