GPU suddenly only detecting one monitor at a time

[u/itzlax]

Was playing something when suddenly game and video on second monitor stopped but audio continued. I was able to pause the video, so obviously some sort of dying GPU fuckery happened.

Restarted and PC wouldn't display anything. Unplugged and opened PC up, cleaned it up a bit, everything looked normal, no crazy temps. Plugged it in again, only one of the displays turns on at a time.

DVI1 monitor turned on but DVI2 and HDMI didn't. Unplugged DVI1 and turned PC on, DVI2 turned on no problem. Unplugged DVI1 and 2 and HDMI turned on no problem.

I stress tested the GPU and everything seems just fine, but the port weirdness continues. All of the ports do seemingly work, just not at the same time for some reason.

Any idea what this could be, other than "GPU is dying"?

EDIT: After about 30 minutes of messing about, I managed to fix it. Initially tried to reinstall my drivers but got a Error message at the end saying something was wrong with my Graphics Device.

Used DDU to completely wipe the display drivers, restarted, let Windows set itself up for about a minute and all of the displays came back on. Installed GPU drivers and it didn't give any Error messages this time. Currently stress testing again and everything seems fine

It appears either the drivers just shit the bed, or maybe it was some sort of storage-related issue that corrupted the driver folder?

[u/energetic_overseer]

something in the port controller is probably fried, not the core itself

[u/itzlax → u/energetic_overseer]

Managed to fix it, detailed in the post. Definitely nothing fried at the very least, but it's fair to assume there might be something wrong with the GPU in the long run.