Has happened a number of times. There is a lot of information here about this problem and you should probably be able to get a replacement from Garmin. You can use the search facility to find others posts but one thread is at http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=69658 . Some fixes are listed there.
Rick James - Nuvi Forum Moderator Nuvi 350 - Nuvi 760 - Nuvi 1695LM - Nuvi 3790LMT (with ecoRoutes HD) - Nuvi 2460LMT - Nuvi 3597LMTHD (with ecoRoutes HD) also TomTom 540S for side by side comparison >> Here << 2010 VW Golf SportWagon 2.0 TDI Diesel