1 Please dont try and delete or remove or add anything to your D drive
2 When editing the Registry you will be operating in an environment outside of the normal friendly Windows area, you will not receive friendly warnings about "do you really want to do this or that?" if you make a mistake, mistype something etc the action will take place (execute) if the mistake is one that will wreck your machine then that is exactly what it will do….. so do be careful, back up your Registry before you start, check all your other back ups and when you have done that do it again! Make a System Restore Point as well to be on the safe side.