my initial system config was intel845gvsr motherboard with no agp slot and my ram was384mb ddr,with processor speed 2.4ghz with which i could play splinter cell comfortably with low resolution(640by480)and low settings.now after upgrading to 845asrock motherboard,512mb ram and geforce fx 6200 (256mb ddr,256bit memory interface),when I am trying to play the same game on winxp or win2000,I get a higher resolution(1024 by 768) and high settings but there is a constant disturbing lightning like effect at background.please help me to solve this problem.