Haha I hate computers.
I blew a power supply up last week. Was pretty fun.
A guy brought his PC in to work for me to fix (in exchange for beers) because he'd blown it up. There was a voltage switch on it, and he'd switched it whilst it was running (the dick!) and it popped and smoked.
I got an old power supply out of my store cupboard, and I noticed I'd cut the wires on one of the connectors in the past for something else. Since I don't like him I thought "fuck it" and put that one in.
30 seconds later the PC was opened up on my desk and I noticed it smoking, just as I leaned my face over it to pull the power it exploded, huge blue electrical flash and plenty of smoke. Unfortunately I had no clean boxers at work, because I SHIT MY PANTS.
Anyway, his motherboard was then dead, and I had to find an old one to repalce it with and ended up building a Frankenstein PC for him. Worth it for beer though.