If you want to do a “factory reset”, do the following:
1. Power off the device.
2. Hold the POWER and VOL — down until you see the Droidboot screen, the release both buttons
3. Use the VOL + or – until you have hilighted the word Recovery in yellow.
4. Press the POW button momentarily. The device will boot to the recovery menu.
5. Use the VOL + or – to highlight Wipe data/Factory reset
6. Press the POW button momentarily. Confirm you wish to reset the device.
7. Your Data partition will be reset. Reboot to android and all settings and apps have been wiped.