I built this system about 5 years ago and have had little to no problems with it. This morning, I see the monitor displaying "no signal input" and the mouse isn't flashing red when i move it. I restart the computer and nothing. The processor fan and other fan thing come on, but no 'beep' and no red light flashing on the front as I usually see when starting up. Basically my cpu won't start although the fans are running. nothing is getting through to the monitor. Any ideas would be greatly appreciated.