check that you have the small 4 pin power on the top edge of the mb plugged in that for extra power for cpu and video cards. you may have gotten a cpu with a working gpu in the chip. could be an error on the shipping part. have you tried connecting video cable to the onboard port and see if it posts. the only other issue could be the bios could be to low to post. the first bios is rev 1. per the mb guild your cpu need rev 4 to post.