i have:
Athlon 1600+
MSI K7T266 pro2 MB
256 mg DDR ram
Asus V7700 GeForce2 GTS 32meg
when i enable AGP 4X in the mb BIOS, the computer starts working fine. but, later on it just freezes (hangs), the mouse stops responding, and a tiny horizontal line appears on the screen (in a different place...