So I built a PC a few months ago and it works good for browsing the web etc. but I can't game. When I try to play a game, the screen goes black and I alt-tab to the desktop and the game is not responding. This happens for basically any game. At first I though it was a probably with not having enough wattage so I went from a CX500 to a CX600. I still have the problem so it must be my video card. Unfortunately, my Amazon warranty is up so I would have to return it to the manufacturer. This is my video card. I paid $170 for it on Amazon which had pretty good reviews. I have no clue how to return it if that Is what I need to do. Can I have some help please? Thanks