Charging didn't help ... so I guess it's time for a system reset.
I'm not bothered by reinstalling 500+ books. And, the "updating database" can be done overnight
But, what about my reading stats? If I save the existing database with Calibre should I restore it before or after installing my books? Do I need the same books to be installed?
Does it make sense to copy the existing library to my HD and then restore that? Or should I just use Calibre to resend?