Hello, I have a home built desktop pc that I'm working on and recently installed windows xp along with other programs. However, the agp video card has a broken fan on one side of it so it over heats and stops broadcasting video out to the monitor. So I went out and bought a new one but when I plug it into the MB, the computer does not power on whatsoever. I was thinking maybe it was an issue with the IRQ but even if I don't have a card in the pc, it won't turn on. Any help would be appreciated.