To Wipe your Chromebook follow these steps
# Turn off the Chromebook.
# Press '''Esc'''++'''Power'''. [br]
A yellow exclamation point (!) or "Please insert a recovery USB stick" is displayed.
# Press '''Ctrl'''+'''D''' to begin Developer mode, then press '''Enter'''.
# Press '''Space''', then press '''Enter'''.[br]
The Chromebook deletes its local data, returning to its initial state. This can take approximately 40 minutes.[br]
'''Note:''' If Forced re-enrollment is enabled for the device, you'll see a note that Developer mode is blocked. This shortens the wipe process, and still allows for re-enrollment when the device automatically restarts in Verified mode.
# When the transition completes, press the space bar, then press '''Enter''' to return to Verified mode.
# Enroll the Chromebook before signing in to it.