To reboot a Dell laptop to its factory settings hold the appropriate function key while the computer starts up. When the Advanced Boot Option screen appears, use the Repair menu to reboot the computer to its original settings.
Rebooting a Dell computer to factory settings causes all the data on the C drive to be deleted. Data saved on other drives is preserved; however, it is advised that the user back up all personal data to a separate disk before attempting to reboot the computer. After initializing the reboot, the user is guided through several menus that allow him to set a language, create a user account and set up an Internet connection.