1. To turn the device on, press and hold the Power/Lock key.
   
2. To turn the device off, press and hold the Power/Lock key.
   
3. Tap Power off.
   
4. Tap OK.
   
5. If the device will not power on, plug the device into a power source for 15 minutes, and then try again.
   
6. If the device is unable to turn off or if it becomes unresponsive, press and hold the Power/Lock key for 10 seconds, until it reboots.