Body
- Turn off the Chromebox.
- Put a paperclip (or pushpin) into the recovery button hole.
- Press down the recovery button with a paperclip while turning on the device. Once you press the power button, you can remove the paperclip
- When you see the yellow exclamation point on the screen, press Ctrl + D on the keyboard
- Press the recovery button with the paperclip again. The device reboots and displays a red exclamation point.
- Press Ctrl + D. The Chromebox reboots and starts the transition to developer mode which clears all local data and takes approximately 10 minutes.
- At the Welcome screen, select English as the language, US as the keyboard, and Ethernet as the network
- Click Continue
- Click Accept and Continue
- When you see the Enterprise Enrollment Screen, enter joinchrome@arbor.edu for the email address and joinchrome as the password
- You should see a screen that reads "Your device has been successfully enrolled for enterprise management". Click Done
From https://support.google.com/chrome/a/answer/1360642?hl=en