I am building a new system with a Shuttle KV40V/N motherboard, ULTRA 512MB memory, WD Caviar 80GB HDD, AMD XP2800+ CPU, ULTRA 500W PS. I cannot get this system to POST. I do not hear any beeps at all, there is no video going to the monitor and no keyboard activity. I have removed the AGP Video Card and am just trying to use the onboard video and still no luck. The CPU fan comes on, the case fan, all the installed devices get power to them. Any ideas ? Thanks