If it's a PS/2 mouse, then unplugging/replugging it as described, with the system powered up, could well be what's caused the problem. You should NEVER connect or disconnect a PS/2 mouse with power to the motherboard, because the socket is liable to 'blow' and the motherboard rendered useless for a PS/2 mouse. Same goes for a PS/2 keyboard!
Catweazle
Grandad
4,335 posts since Mar 2004
Reputation Points: 229
Solved Threads: 149
If it works for you mate, then go right ahead. I'll simply say this:
* The PS/2 socket is not designed to be hot-swappable.
* I've had many a system handed to me to troubleshoot, and found the telltale scorchmarks on the top of the PS/2 socket when I've opened them up - every one of those caused by what I described above.
Catweazle
Grandad
4,335 posts since Mar 2004
Reputation Points: 229
Solved Threads: 149