After spending all my money on a computer it is really boring when nothing seems to work. I can try to explaine: A Asus a8n sli deluxe motherboard connected with a Targan 420 24 pin psu, with 2 512 Twinmos 3200 mem, and last the Geforce 6600gt graphic card, the problem is that nothing appears on my screen, not even the bootup/startup... And the mboard speaker beeps every 3 sec or so.. Can someone please help me? Have read every post on many forums.