Reboot

To purge the effects of Davros' computer virus, the First Movellan's systems rebooted. This allowed his true self, Mark Seven, to say a final goodbye to the Tenth Doctor before the reboot deleted his pre-Movellan memories forever. (AUDIO: The Triumph of Davros)

When his TARDIS lost power, (AUDIO: Last of the Romanovs) the First Doctor and Susan Foreman triggered a system reboot that restored the ship's systems. (AUDIO: For the Glory of Urth)