Welp, my not very old ASRock AB350M gave up the ghost yesterday it seems. No way to really tell if it's CPU or MB without another cpu and I don't have one to risk testing. I'm leaning towards MSI because the seem to be best performing boards. Gave up on ASRock. Too many problems. Horrible support. For Flight Simulator Games, some CAD design work. Don't want a machine that needs Nitrogen tanks to stay cool. Any suggestions? Thanks as always!