Originally Posted by bdruff
The computer was running when I was plugging the fan back in. It sort of sparked then shut down.
Little warning for you. You should never do what you did, plug something into your system when its running as you can fry it all in 1 small reckless move. Not only can you blow your PSU out but also cook all your hardware.
When your system is off but plugged in, it naturally removes static lingering anywhere & when you turn it on its safe to do so, now plugging something in whilst its on can do any of the following.
The static will wipe out your entire system.
The sudden surge of power needed can blow your PSU (9/10 its just a fuse gone but people still threw them out :/)
or both of these can happen.
Ether way, always power down & unplug before connecting or unconnecting anything in a pc.