I am using windows xp pro with sp3 on a stand alone desktop not connected to the net, after shuting down properly the next time i turned it on i just get the wallpaper on the desktop and nothing else, if i press ctrl+alt+del i get task manager used this to try changing users, but i get message saying "This computer is in use and is locked, Only JULIE/Martin (julie) or an administrator can unlock this computer" Have tried different user but same problem, can anybody help please.