XFX 5700 crash errors

[Lysero]

I have an r5 3600 on an msi x570 and an XFX RX 5700 running on the 20.11.2 driver. The only game I'm really playing atm is World of Warcraft, which is not very gpu intensive at all. But I just started having this issue last night where I was getting BSOD after playing WoW for only a couple of minutes. I did not have enough time to see the actual error code, and Event Viewer is very unhelpful, with Kernel 41 errors saying that the system shutdown unexpectedly (duh). I tried swapping RAM modules first because I had spray-painted my heatsinks and thought maybe I'd killed something, but that turned out not to be the issue (also ran mem checker and received no errors). Thinking maybe it was just a corrupt version of windows I "reset my pc" - keeping my files but basically started over. That didn't solve the problem either. WoW just stopped giving me a BSOD and just reboots my computer after a short freeze. (I turned off the auto reboot, and the system just completely freezes so it told me nothing). So basically, I play the game for roughly 5 minutes, CPU and GPU temps are steady and low, CPU is around and GPU 50-60, and then the computer crashes and reboots. My character is just sitting there waiting for the crash, because it's pretty consistent. I ran Furmark for a good 10 minutes at least - it crashed at first because the memory temp was getting up to 92 and the fans weren't working hard enough according to GPU-Z. Reinstalled MSI Afterburner and was able to run Furmark  for a while... and when I was satisfied that it was fine, I shut it down, and then the computer crashed. I decided to swap my card with my BF's, which was my old Sapphire RX 580, and have no issues so far!! Am able to run WoW just fine so far (crossing fingers), and as the icing on the cake, he's running my 5700 without issue. I'm SO CONFUSED. His system is an Intel i3 coffeelake i think, with a z370 gaming 5 mobo. I had him update to the 20.11.2 driver and is still fine. i just don't know what could suddenly cause instability on MY system but not his, even after running a fresh copy of windows and have barely anything installed on it right now. If anyone has any ideas, I'm all ears! I would really like my 5700 back, especially since graphics cards are impossible to come by right now.