About 1 week ago, I accidentally let the battery in my main N900 go dry. Whenever this has happened in the past, I've had a bit of a struggle getting my N900 going again, but this time I'm stymied. I have two N900s and 3 N900 batteries, and I can't get either to boot. When I plug in the USB cable, the LED on the bottom left blinks amber, pulsating at the usual rate. Eventually, the LED changes to solid green. Pressing the top button does nothing, however. If I reconnect the USB cable, the vibrator buzzes and the Nokia splash window appears (with no backlight). After a few seconds, the pulsing white dots appear, with backlight, and then they fade away again after 10 seconds or so. Nothing else happens. I've tried charging with a USB cable from a computer and with the Nokia charger. The results are always the same, regardless of the N900/battery combination. Does anyone know what's wrong? Do I have three bad batteries?

Thanks for any suggestions!