Acer Iconia One 10 - Resetting Tablet to Factory Settings

50 - Advanced settings
Resetting your tablet
A clean boot restores your tablet to the factory settings.
To perform a clean boot, open Settings from the Application menu,
then tap Backup & reset > Factory data reset; tap RESET TABLET
and then tap ERASE EVERYTHING to format your tablet.
Important
This will erase all your personal information, any contacts stored on
your tablet and any programs you installed.