To turn the device on, press and hold the Power/Lock button until the screen lights up. Note: If you are unable to turn your device on, plug the device into a power source for 15 minutes, and then try again.
To turn the device off, press and hold the Power/Lock button.
Select Power off.
Select POWER OFF.
If you are unable to power your device off or if it becomes unresponsive, press and hold the Power/Lock button for 10 seconds, until it reboots.