Hit the windows key and:
Press To
Display or hide the Start menu.
+BREAK Display the System Properties dialog box.
+D Show the desktop.
+M Minimize all windows.
+Shift+M Restores minimized windows.
+E Open My Computer.
+F Search for a file or folder.
CTRL+ +F Search for computers.
+F1 Display Windows Help.
+ L Lock your computer if you are connected to a network domain, or switch users if you are not connected to a network domain.
+R Open the Run dialog box.
Display the shortcut menu for the selected item.
+U Open Utility Manager.