I have done system repair, it didn't help. None of the games that worked before the restart don't work. And there are alot of them. I mean Borderlands, conviction, dead space, hinterlands, age of pirates 2, gta 4 and so on. And there is one other thing, which I really wouldn't call a problem (Shown in the picture 1). If the bar is invisible everything is okay, if white, the problem. At first when the problem occured, the computer worked fine a couple of times when rebooting but the problem came back, and now it has stayed that way.