I know you said "all the fans were spinning" but my power supply fan starts hitting it's own frame when it gets too cold, did you check that fan? I forgot to ch

I know you said "all the fans were spinning" but my power supply fan starts hitting it's own frame when it gets too cold, did you check that fan? I forgot to check that one myself the first time I diagnosed. In my case it's just super loud but doesn't stop the fan or cause a shutdown. If that's it, loosening the screws holding the fan in place just a little bit worked for me.