Garmin Nuvi 3450 screeen shows charging icon, but cannot turn off
I plugged my Garmin Nuvi 3450 into my computer to update the maps and it shows the charging icon. But I cannot turn it off or do anything with it. The charging icon shows and will not go away, making the device useless. Even after I plugged it into my car's holder nothing changes. It does not react to the on/off switch on top. What can I do to reset this device ?