Problems with my graphics (card?)

[Zarathustra]

I had a GeForce Ti4200 that started to do that. In the end it was a case of the card burning itself out. The fan had been going bad (unknown to me) and eventually the thing overheated on me. It sunk into the ninth level of Hell and took the AGP slot kicking and screaming along for the ride.

Good times.

Just to check, open the case and ensure that the fan on the vid card is running on startup. Then run whichever games have been giving you problems and take a look. Can't hurt.