TURN ON DEVICE: 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.
TURN OFF DEVICE: Press and hold the Power/Lock button, then select Power off.
Select Power off to confirm. Note: If you are unable to power your device off or it becomes unresponsive, remove and re-insert the battery from the device.