1. To turn the device on, press and hold the Power/Lock  button until the screen lights up.
   
2. To turn the device off, press and hold the Power/Lock button.
   
3. Tap Power off.
   
4. Tap OK.
   
5. If you are unable to turn your tablet on, plug the tablet into a power source for 15 minutes, and then try again.
   
6. If your tablet becomes unresponsive, press and hold the Power/lock button for 10 seconds, until it reboots.