A friend of mine has a PC that one day suddenly died on him. The main hardware is a Core 2 Duo with a Gigabyte motherboard. He showed me that if you pressed the power button, the fans would spin about half of an inch before stopping... then nothing. We got a new power supply, as his was old, and still the same problem. Has anyone ever heard of something like this? Where should we go from here in troubleshooting? I am thinking that there may be a problem with the power switch on the case, and that the wiring from it might possibly be bad...
look at all the silver topped cans on the motherboard which are capacitors that they are flat topped not domed & not leaking brown stuff. look at motherboard manual to find which pins are the power button pins & short them using a screw driver. remove all cables to drives. remove all cards & ram. reseat videocard & 1 stick of ram. clear the cmos as have found that to kickstart stubborn systems sometimes.