This device has a non-removable battery. This process can be used to simulate a 'battery pull' when the device is unresponsive, frozen, or doesn't power on.
In most cases, a soft reset won't affect data on the device, unless the battery is very low.
Press and hold the Power + Volume down buttons until the screen goes dark then release both buttons.
Allow up to 15 seconds for the Boot Mode screen to appear.
From the Maintenance Boot Mode screen, select Normal Boot.
Utilize the volume buttons to cycle through the available options and the power button to select.
Allow several seconds for the device to restart.