@Sacman: Odd that you would say that 500 is a bit low, but perhaps you are correct, especially if it was overclocked or is being stressed more than other bits of hardware. GPU is rarely the problem, since they tend to be largely universal, unless the motherboard isn't equipped to handle the card or the power drain that comes with it. And I imagine the problem is that the computer will start but not handle any graphical applications, which might mean that the drivers might need some form of tweaking as well, but thats just random advice at the moment.