A friend gave me an m100 and it appears the batteries have been dead. Retrieving data is not an issue. With good batteries I've performed a soft, warm and hard reboots. After hard reboot and erasing all, it starts through the calibration but goes into an endless loop. If I turn it off and back on I get the main screen but nothing operates properly, probably because the screen is not calibrated, etc??? Any suggestions? I'm not too familiar with these things...