Hello everyone. i upgraded my motherboard amd phenom 2 x4 810 processor in my new moyherboard the ASUS M4A79XTD DDR3. but for some reason i am not getting any signal from graphics card which should lead to monitor.I am gettign absolutely no signal. Prior to that,I bouhhyyhe gama790xtud4p and i had the same problem which i got no display signal. I even changed the video card tried another one. same problem. i changed the monitors, same problem, [ changed the cables and once again the same problem. I dont knowwhat to do. This is a big mystery to me?PLEASE HELP ME!!does anyone know whatto o or what the problem is"?