Hey not sure if you have tried this but I had a friend who had similar issues after getting a hdr monitor try going to windows settings search hdr and make sure it's turned off turn it off in doom eternal too hope this helpsTotally 100% agree, more just a monetary issue at this point since the original pc was 2k and its upwards of 4 at this point with new parts and technician fees. So trying to weed things out and do my best to stop bleeding haha. For safety its a really good idea though. After trying a few more things (including UPS) i'm going to sell off all the parts that are good and go buy a laptop or iMac again as its been such a mess and time pit and i've given the pc every possible chance to work and nothing got it up and running.