My power supply recently overheated and shut my computer down. When it cooled I turned it back on and everything was ok. While I was on the power supply fan must have went out and the computer shut down again. I waited about 1 hour to see if it would turn back on. When I try to turn it on the CPU fan blows and it is detecting the DVD drive but I get no Monitor activity. Is it possible that this part of the motherboard has fried? Any help is appreciated. I also tried a new power supply, this did not work.