The manual of the device states that the only way to reset the tablet to its factory defaults is to use a built-in option which is available on the Settings menu. Start your tablet and wait for it to load completely then enter its main menu go to Settings> Data protection. You will have two options: one, Secure my data which handles all the content stored on Google Servers and two, Reset to default which you will need to use to reset the tablet to its factory defaults. Please be aware that it will delete all your applications and settings stored in the Internet memory of the tablet. After this process completes, the table will restart to its factory defaults.