Can't Play Anything Anymore!

Well actually it's my cousin who can't, he used to be able to play the three main games we've played for a long time perfectly fine (Maple Story, Trickster, and Space Cowboy), but since a week ago when he tries to play anything he can't, and gets errors that have to do with the video card (failed in finding proper screen mode for Gr2D error for maplestory). BTW he has a Intel Chipset, I'm suprised he could play them in the first place, but I'm wondering why he can't now?

A system restore should do the trick. You could also try seeing if there are any updates for the video card.