Hi, so about a month ago I bought this gtx 970 really cheap from some random dude on the internet (It was about 1/4th the price so I knew it had problems). So I got it to work, but never could play because my computer would shut down when I tried to play something that forced the graphics card a little. Then tried it on my friend's pc and it worked perfectly for 2 days, no artifacts, no sudden shut downs. So I bought a new psu thinking that that was the problem, I set everything up so I can test this bad boy, and boom. Artifacts everywhere. So know I'm thiking, did I ruin the card in the trips from my friend's house to my place? should I oven the card?