Okay I'm fairly new to PC and got my buddies old build a few months back. The thing worked flawlessly for a couple months until the GPU started going nuts for no reason, the screen would go blank and the fan on the card spinned as fast as possible. I can be playing a game for an hour before it does or just getting it on checking the internet. It seems to be random and afterburner isn't showing anything that doesn't look natural. The build is an i5 intel, msi gaming g series motherboard, gtx 1080, and 16gb ram gskill. Anyone have any idea?