[Poseidon]

I've posted this on hard forum already but thought i'd ask for some advice off you guys.
Ok, so my friends computer just blew as he was watching TV from it, he said it made a loud bang and loads of smoke came from it, the PC was switched OFF at the time, which is something i've never heard of before. The PC wont now start.

He's asked me to ask could a if a power supply blowing takes any other components with it. He doesnt yet know what caused it and what has blown