Performing a manual factory reset
If a factory reset didn't solve your problem, you can try a
manual factory reset to restore your eReader to its original
settings. After a manual factory reset, you'll need to set up
and sync your eReader again. Before you start, charge your
eReader for at least 1 hour.
1. Press and hold the power button until you see a
black 'Powered off' screen. Note: If you don't see
the 'Powered off' screen, go to the next step.
2. Press and hold one of the page turn buttons.