Eddieg50, have you tried swapping the RAM?
As I've understood, your temps and graphic card are good. Now that you mentioned BIOS problems maybe something happened with the motherboard? That's the worst scenario I guess. Did you have any power outta…
To me, that sounds like a problem with your RAM.
Check if you have 2x 4GB or only 1x 8GB. If you have 2x 4GB try playing around with them by putting only 1 of them in different slots. If you have only 1x 8GB try putting someone elses RAM onto your …