|Restart your computer. |
As the system restarts, press <F2> to enter system setup.
When the system setup screen appears, press <Alt><F> to load the Dell default settings.
The computer beeps when the settings are restored.
Verify that the time, date, and year are correct and that the Secondary Drive 0 option is set to Auto.
Press <Esc> and then press <Enter> to save your changes and exit.