Can you clarify what exactly the problem is? It just sounds like you have one issue after another and it's hard to understand which one you have resolved and which one is still a problem. Anyway, resetting the CMOS won't cause anything to happen to your graphics card. And when you say that you put a new PSU in, does that mean you've replaced the 430w? I'd love to help, but I'm very confused as to what the problem is. My only guess it that you have nothing going to your monitor when you boot up the computer (based on your thread title), but the specifics are very confusing.