If your good with a soldering iron, there is a small surface mounted fuse that protects the ps/2 port. you can always try replacing it to hold you over until you can buy a new motherboard. How old is your Motherboard might still be under warrenty. just don't tell them anything. Say you don't know what happened and don't say you think it was from a electrical storm that voids your warrenty also.
Good luck
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Not so Rude,
RudeDog
