A typical PC shutdown takes forever. Here are a bunch of Registry tweaks that reset Windows to close shop like it's late for the bus ride home. Keep in mind, any changes to the Registry can be troublesome, so you may want to make these alterations one or two at a time just to make sure they don't futz up the works (it'll also be easier to diagnose any problems that may arise). And for sure back up the Registry by creating a restore point before you begin.....(free).....