help...im typing from my phone right b.c im driving and dont have a computer. i brought the home dock into the car and plugged it into the cigarette lighter using a cigarette to usb converter. the tomtom was already on using battery power when i put it into the home dock which was plugged in. the tomtom went dead and shutdown but the green light came on. the unit wont turn on and i tried the reset button but it doesnt do anything. if i put it back into the home dock the green light comes on but it wont turn on. any ideas?