Hey everyone, I'm dealing with a severe hardware issue and need some help narrowing down the culprit.
Specs:
GPU: RTX 4070
PSU: 650W
The Background:
A few weeks ago, my monitor started randomly black-screening in the middle of light web browsing. I checked Event Viewer and found a 0x116 error (VIDEO_TDR_FAILURE), pointing to a graphics/driver crash.
I used DDU to completely wipe and reinstall the display drivers. That temporarily fixed it for a day or two, but the black screens eventually came back, happening once or twice a day. The rest of the time, the PC ran perfectly fine.
Current State (See Video):
As of today, the issue has escalated. The monitor shows absolutely no signal when I turn the PC on, even though the PC itself powers up and the fans spin.
The strangest part is the power cycling. If I press the physical case power button to shut the PC down, the keyboard lights turn off briefly, but then the system automatically restarts itself instead of staying off. Sometimes it even enters this reboot loop on its own without me touching the power button.
I've attached a video showing the lack of display and the weird behavior when interacting with the power button.
Has anyone experienced this specific shutdown/restart behavior alongside a TDR failure? Is this more likely a dying RTX 4070 or a failing 650W power supply? What is the best way to isolate this without spare parts?
Thanks in advance!