First back up all data on your computer as this procedure completely wipes out your system.  Turn off the computer and unplug any printers/peripherals (except the mouse, monitor and keyboard).

   1. Power the computer on.
   2. When the Dell screen appears press and hold the <Ctrl> key on the keyboard, press the <F11> key, then release them both at the same time.
      The Dell PC Restore by Symantec window appears.

Follow the onscreen instructions.

Caution:  This will probably delete data.