OK i now understand But i wounder why i can't turn my pc ON when im not usning it for about 10 hours. I only See DET DRAM on lcd poster and i must remove one ram.(1x2GB) and next turn it off and add ram (2x2GB). And what cooler will be good for Q9650 for overclocking to ~ 3.6GHz . Thx for help and sorry for my bad english im still learning.