I have just experienced my first computer failure. The computer won't turn on at all. It doesn't even turn the fans on.
Clues:
1) It is not the power supply because I tried using the one from the failed computer on another one and it worked.
2) If I unplug the ATX 12V Connector, then the fans turn on, but no lights or visuals.
3) If i plug the ATX when the fans are working, it turns off.
9 out of 10 times it's a dead mobo, when the PSU is confirmed working. Unless you can test the cpu in another system, the only practical step is to replace the mobo first.
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