Thanks. When I press Ctrl-Alt-delete I get the Close Program with Launchpd not responding Highlighted. How do I at the same time move the Arrow Keys to move machine to start. The Task Bar is there but the Icons have disappeared including the clock. I can't Shut Down my computer the normal way using START - Shut Down. START is frozen and as such I can't get into Explorer to get into the Documents.The rest of the computer works OK. I can access all the Desk Top Icons.