Had a storm the other night and the power loop was pulled away from
the house causing 220V to surge through one leg. My computer was
still on when it happened and it screwed the surge protector, now the
computer will not do anything. It shows the on light for a second
when I turn it on, then it goes out...no noise, nothing. Is it the
power sully? Could I just replace it?
Unplug the power supply from AC for 10 minutes. Plug it
back in and try it.
Unplug the power supply from AC again. Open system and use
the clear cmos jumper or remove the motherboard battery for
10 minutes. Reassemble and retry it.
You might take voltage readings of the power supply if you
have a multimeter. Disconnect the PSU from everything and
short the PS_On pin (usually pin 14, a green wire) to ground
to turn it on (presuming it is an ATX, you haven't provided
any specific system info). If it is a less common or
proprietary system or power then Google for the specs on it,
whether anything else or different is needed.
It could be the power supply, or possibly it is fine but
something else like the motherboard is damaged. Having
another power supply to try could be helpful, as could
(unplugging AC power first then) removing all the extra
cards and devices from power and data cables, leaving only
the video, 1 memory module, CPU and heatsink/fan. Then
reconnect AC again and try it.
I assume you are not trying to use it plugged into any surge
protector that was plugged into an outlet during that event.