Report "I have a garmin nuvi 1200 and it just stopped comming on. Does this thing just lock up and if so how do I get it to come back on. I have seen where it asks to "lock screen" and never did it but that is what appears to have happened. I had it attached to the power cord and plugged into the cig. lighter outlet in my van and went in to get a cup of coffee and a dunkin donuts and when I came out it wouldn't boot back up and no matter what I have done since then it won't boot up"