Question Intermittent black-screens with a used RX-580 ?

Ava Sterrsim

Dec 8, 2021
I got the card used and the previous owner said it had stopped working, So i gave it a shot and the Bios Recognized and The system booted with it functional. Until 2 hrs later where the Temperature spikes and stuff starts throttling until the display goes black. I restarted the computer and again 2hrs later it blacked out. any ideas what is causing this ?
Some context from the previous owner, he said the card was non-functional and was unable to boot with it in.