How to reset your Chromebook

On your keyboard push ctrl + alt + shift + r
Click Powerwash
On the Confirm Powerwash page, click Continue
On the Welcome to your Chromebook page, Click Get started
If on the ASD network, choose the ‘Guest’ wifi (This should automatically move to asd-secure once enrollment is done.)
After reading the Google terms of service page, Accept and continue
You may be prompted to join the guest Wi-Fi, click Continue to the Internet
On the Enterprise enrollment complete page, click Done