If none of the above works you can always factory reset it. Hold power until it shuts down. Hit power. When The amazon screen or whatever your first screen is comes on hit volume up (could be volume down depending on version) and power. Hold it. That will give you an options screen. The only one you really need is the factory reset. After you do it the device will restart. It will appear as nothing happened. Let it sit for few minutes. The screen will change and go through the initiating process and you will have a like new device.