i bought a G31M-S but, after i install any ram, it doesnt display any video, the MB its installed properly. if i remove the Ram it does 3 beeps. The Processor its a 2.66Ghz Celeron D, should be compatible, thats why i bought it... the rams are 533 and 677 DDR2... and they all work cause im using them in this computer right now. please, help me out.