I am having this darn problem with Halo and Far Cry. More than half of the screen is filled with crap, and the game is playing in the upper quarter of the screen, in three multiple windows. Happens in fullscreen as well as windowed mode. Anyone ever had this problem? Anyone got a solution?

My Specs:

P4 2.26 ghz
512mb DDR ram
40GB HDD
onboard 64 mb VGA
DirectX 9.0b

Games like Manhunt, NFSU, Mafia and Warcraft 3 work fine, but I am having the above mentioned problem with Halo and FarCry.