A master reset will result in the loss of all data stored on the device including 3rd party applications.
This type of reset should only be used as a last resort after all other troubleshooting steps have been exhausted. It is highly recommended that you complete a backup of the device information and disable Device Protection before proceeding with the steps in this tutorial.
With the device turned off, press and hold the Volume down key.
Note: If Device Protection is not disabled, the login credentials for the Google account previously associated with the device must be entered to complete the initial set up.
With the Volume down key held down, press and hold the Power key.
Release both keys when the Android system recovery screen appears.
Use the Volume down key to choose RECOVERY MODE.
When finished, press the Power key.
When the green android is displayed, quickly press the Volume Up key and the Power key for about 5 seconds, then release both keys.
Press the Volume down key to scroll to wipe data/factory reset.
With wipe data/factory reset highlighted, press the Power key.
Once the wipe is complete, with reboot system now highlighted, press the Power key.
The handset will restart.
The handset is now reset and ready for use.