I checked several times that I had all the chassis connections made correctly and went step-by-step through all the instructions - same results. Checked the ASUS website, followed the troubleshooting directions - including removing the m/b from the case and shorting the contacts with a screwdriver - same results. I opened a ticket with ASUS tech support - they gave essentially the same advice available on the website. How would I know if the trouble is in the psu, m/b, cpu, mem, or video card? The NOSPIN Group has added a new feature on our website, web based bulletinboard for questions and answers: Visit our sister website at http://nospin.com