purchased core 2 duo 6850 and asus p5k motherboard with corsair dominator ddr2 and 8800 gtx. while formating hard drives, the system froze up. i have 650 watts for power supply. i am running XP. it froze on 2 different sata hard drives. finally, one got done and was able to install xp but the other one froze again. hard drives are not 2 years old! anyone have a clew on why system freezes?