... it looks like ended up breaking my PC on the move somehow... I even went ahead and removed the GPU to prevent it from breaking but it looks like that's actually what ended up being broken 🙃 (I have 4 debug LEDs. When I turn it on it goes from CPU to DRAM to VGA and gets stuck there). I'll have to see if I can get it to work somehow after I get home later, but I'm afraid I was unlucky enough to actually have killed my GPU with static electricity. And of course it had to be the most expensive part....
But I wonder what could possibly be reset for the GPU to work again? It was working just fine before I removed the GPU/moved places, and I don't think I did anything in the BIOS besides change the RAM clock speed (I have 2 very similar but apparently differen RAM kits, so XMP doesn't work) and activate AMD smart access memory. A friend mentioned AMD SAM is kinda finnicky sometimes, but I still don't understand why it suddenly stopped working without changing any settings myself