Hi I have installed a new asus p5nd motherboard in my computer and now have serious lag when I play games like call of duty 4 and world at war. I had a computer place do the repair and they also replaced the power supply. Drivers are up to date nad I did not have any lag at all before my pc crapped out. My specs are pentium extreme dual core 3.73 mhz 2 gig ram,wester digital raptor sata 10,000 rpm hard drive, 2 7900 gt video cards in sli mode and phys x accelerator. The computer guy told me he repaired windows and did not have to reformat the drive, could not reformatting the drive be my problem? I thought when you change mother boards you have to reformat. my old board was a asus p5n32 sli deluxe and was replaced with the p5nd. thanks for your help