1. To turn the device on, press and hold the Power/Lock key until the screen lights up.
   
2. To turn the device off, press and hold the Power/Lock key until the Power option screen shows up.
   
3. Tap Shut Down.
   
4. If you are unable to turn your device on, plug the device into a power source for 15 minutes, then try again.
   
5. If you are unable to turn your device off with the Power/Lock key, remove and re-insert the battery.