buwish :
Have you tried removing the battery for say 30 seconds and then putting it back in and restarting?
Thanks very much for the tip. It took me a couple of days to find a Torx driver the right size, but after disconnected the battery for about an hour and then reconnecting the battery and closing the case, I plugged it into the charger and it went into normal battery activation and new boot mode. It seems to be working OK. Thanks again, and I hope someone else benefits from your tip, as well.