Deborah got a new tablet when she renewed her contract with AT&T, but she's getting what's called a black screen of death where the screen isn't displaying anything. Leo says that what's probably happening is the screen brightness has been turned down to zero. Leo suggests a system reset. She should hold down the power button and then hold down the volume up button. That should get the tablet into a recovery mode. One she's in that recovery screen, she can do a complete factory reset.