Due to some requirement i had to reboot my desktop PC. hence i tried restarting it through windows command. However, since my external hdd was connected it did not reboot after shutting down perfectly. I tried by removing the HDD from the USB port (a little carelessly i must confess) and pressed the reboot button on the cabinet. Immdly my room's fuse got blown. Can some one suggest what should be my course of action now?