OpenGL Flashing

I have a 2.2 Intel, geforce 4 Ti 4600, Windows XP and the newest nvidia drivers, and whenever I try to play an OpenGL game (like Quake 3 or Tribes 2) The intro movies shake and when playing the game, it flashes white. The frame rate looks OK but my screen keeps flashing white, and sometimes it will freeze and make me restrart the computer. I also know for a fact that the card isn’t a defect because I have swaped it with my friends, and still no luck.
Pls someone help!