I just bought an e6600, Asus P5AW DH, ATI 1900xtx and 2 gig OCZ DDR2-800. I had overclocked to 335x9=3 ghz. Ran prime95 with one error. Bumped up the vcore to 1.325 and ram voltage to 1.525 (can't remember exact ram voltage) using the windows ASUS utility. It asked to reboot which I did. It immediately shutdown - not the usually lengthy winxp shutdown. It tried to restart but does not make to the ASUS post (just a beep). The ATI fan continues to run at top noisy speed and nothing more. I removed and reinstalled the CMOS battery - no change. What now? Any advise is appreciated. Thanks.