I would not have thought that the motherboard has blown as you do at least get some kind of a boot.
1. Can you get into the Bios on your motherboard?
2. During the boot up sequence how far does it get?
The strange thing is that your Keyboard, Monitor and Mouse will already have their drivers within Windows (Xp is it??) and do not need any additional drivers to work....They may work better with drivers supplied but are not needed just to get them working. I take it these periperhals are all USB connections also?
The first thing I would suggest would be to unplug the PC from themains and CHECK all connections inside. Most new motherboards have EXTRA USB connections that you need to wire correctly to contacts on the board, maybe these have come loose or fallen off?
Once all connections have been verified as Ok we can start to look at other things......
Oh and

;-)