hi
i built my PC today, then switched it on and the PSU went bang, i think it was set on the wrong setting, on 115V instead of 230V, could this of caused it. It was running for about 5 seconds.
If you dont live in north america and you put it to 115v then you fried it. Hopefully it didnt damage the motherboard, the only thing you can do is get a new psu.