This started when my PC that I built about two months ago started flickering to the point it was unusable. I suspected this was because of my new graphics card, which have had issues like this before, so I put my old GPU back in. But it would boot fine though, even connects to my bluetooth speakers. That did not help either. After a restart, it would not boot at all. The fans would sometimes spin for a few seconds then stop. I tested my PSU with a paperclip and it passed. I tried a different PCIE slot, nothing changed. I tried booting with only 1 stick of ram in a different slot, nothing. I am super confused now, if anyone can help it would be appreciated.