When I turn it on, and it gets to "Loading maps..." it sits there for a few seconds, then the screen goes blank and it beeps once. If I plug it into a computer it does say "transferring to mass storage..." but then the same thing happens - screen goes blank, beeps once, and is off.
I can force it to go into mass storage mode by holding down the lap button when plugging in the USB port to a computer. Then I'm able to navigate the files/folders no problem. I tried deleting all of my Courses from the device but that didn't make any difference.
Any ideas?