Graphics card problem!?

When i started playing fear, i noticed that polygons started shooting out of places, and even when it is on minimum setting, it still does this. As soon as i turned Vsync on, the problem got much worse. With ceilings turning into shooting polygon textures, and the walls half-vanished, it dont know what it is. I get these checkered cubes things with multicolours(like corrupt data), they come in strips and only appear when i get close to an object. I have recently downloaded the latest drivers for my graphic card. This used to happen to my other games, like Farcry, but ever since i installed FEAR, it does not happen to other games anymore, but FEAR. I have not changed my graphics card in any way, or overclocked it, so whats happening? Is it my FEAR game that is corrupt or something? How can i fix it? Please give suggestions, thanks!