try this app...http://www.hoverdesk.net/freeware.htm...it's free and it cleans your registry...
open the program about half way down you will see clean the registry...click on it and checkmark invalid sevices...it will clean it out good and it leaves a backup in case something goes wrong...when it's done at the bottom you will see it says select...click on that and select all...right click and click on delete all...