Howdy, I'm at my wits end here, and I was hoping one of you could point me in the direction of something else to try. Working on friend's 2003ish eMachine (ick), because his motherboard chipset heatsink fell off. Used some thermal adhesive to stick the sucker back on, but when i hit the power button, nothing happens. However the motherboard led is on. So I pop in another working PSU that I had laying around, with the same thing happening. At this point I figure the motherboard got fried, and ordered a no name gateway oem motherboard. I throw it in, and have the exact same issue. I try shorting the power pins to see if it was my power switch, and nada. It might be that the processor was killed, but wouldn't the psu fan start up in that case? Or I ordered a dud motherboard with the same symptoms? At this point I'm just not sure what step to take to resolve the problem. Any advice?