Restoring the ActivTable factory default configuration should only be done as a last resort, and on the advice of Promethean Technical Customer Support.

Connect a USB keyboard to the ActivTable connectivity panel and switch on the ActivTable. When you see the following screen, quickly tap System Recovery. Alternatively, press any key on the keyboard to interrupt the start-up process, and then tap System Recovery.
User-added image
Tap the required language, and then tap Restore to Factory Default configuration. Tap Yes to continue.

The restoration process can take up to 20 minutes, and once complete, a confirmation message will be displayed on screen.

We recommend following the initial setup process, including language selection, Wi-Fi setup, and installing any available Windows and ActivTable software updates.