I bought this CPU for the purpose of being able to overclock. I have an ASUS m2n4-sli MOBO, 2gb 800 A-DATA RAM, nvidia 7600 gs w/512. It works fine when everything is at stock, but once i set the multiplier to 15 (haven't tried stepping yet, will do so tonight) I restart from the bios, windows XP butterfly came up, a bluescreen flashes, and then restart. Everybody seems to be able to do it with no problem. I am new to overclocking so I am just looking for some preliminary things I should check here. Please, help.