my computer works great. but when i try to play games that require good 3-D graphics, the terrain's textures and colors flicker then my ocmputer freezes. i dont know what the problem could be, but i know its not a virus because i run 2 virus scans a day with Symmantec Endpoint Protection.
i am using a iBUYPOWER Appolo
specs: Windows Vista Home Premium
AMD Athlon(tm) 64 X2 Dual Core Processor 5200+ 2.70 GHz
4.00 GB RAM
NVIDIA GeForce 9500 GT
it only does this when i play games like World of Warcraft, Warhammer Online, Warhammer 40k Dawn of War 2.
please, any help would be appreciated!