I have a Gateway desktop with windows XP. When I turn on the pc the monitor goes right into standby before I can see anything. The pc seems to be booting up just like it used to I can hear the fan and even the disc drives if I put a disc in. First I was told it might be the power supply, replaced that still the same thing. Then I was told it might be the video card replaced that and still no change. Oh and the monitor works just fine unhooked it from the pc and got the no signal thing then hooked it up to my laptop and it worked just fine. Any clue what the problem could be??