I have an eMachines desktop model t2862 that has been working well for several years. Suddenly this morning it wouldn't start at all. I swapped out the power supply with one I know is ok, but that didn't work. I tried swapping out the power switch (I had one fail on me on another comp and thought this might be it). No dice. There is a light on the motherboard that is on when there is power to the machine, and so far as I know, nothing noteworthy happened to the computer yesterday, but I'm at a loss what might cause it to fail so badly that the fans don't turn on, even, let alone beeps, POST, video signal, etc. Could this be caused by a mobo battery fail? Any thoughts would be appreciated as I've run out of ideas.