I reformatted my hard drive a couple weeks ago, and now I can't play any full screen games. I have a GeForce FX 5200 (I know, not great), which was enough to play Battlefied before and Shot Online, etc. I tried to play Shot Online the other day, and it would immediately freeze. I updated the drivers on the video card and the like. Any ideas? One other thing, I had to replace the motherboard back in January, would this have anything to do with it?