You cannot boot up your Nook HD.

The battery may be completely drained of power. Plug the Nook into a wall outlet using the power adapter and the 30-pin cable that came with the device. The Nook HD takes 3-4 hours to achieve a full charge.

The battery may not be installed properly. Remove the battery then reinstall it, this can be done by removing the backplate then unscrewing the battery.

Purchase and install a replacement battery.

Screen displays frozen pixels or lines.

Try a soft reset of the device by holding the power button for at least 20 seconds, then release the button. Once the device is powered off, hold the power button again for 2 seconds to turn on the device.

If the screen shows signs of being physical broken such as by displaying cracks, it will be to be manually replaced.

Tablet holds only a short charge or cannot be charged.

The software responsible for maintaining the battery’s charge could be miscalibrated. Removing the battery before connecting the Nook to a power source should reset the device.

The battery is broken or has become disconnected. First try to reinstall the battery, if that does not work you must replace the battery.

Nook HD boots up but the screen displays nothing or is unresponsive.

Try removing any SD cards and soft reset the device.

Replace the screen.

Buttons do not move or respond to input.

Press and hold the power button for at least 20 seconds then release the button. Once the device is powered off, hold the power button again for 2 seconds to turn on the device.

Consult the guide on how to manually fix the broken or jammed button. The device will need to be taken apart in order to realign the button.