Nuvi 50 LM

I am curious awhile back about 2 weeks ago I entered address and it found it Setting up gave me initial directions and then went back to beginning. I had to enter information again.
Today hooked it to my computer to update it (lifetime Maps). Garmin shows garmin and green line which goes in loop. also green line may go all the way across but goes back to beginning and short green line and none. short green line and none just Garmin showing. Also garmin express does not recognize Nuvi on computer. Any suggestions?

 

53 views??? and counting Anybody have a guess?

 

This appears to be a web forum where people come to post questions and read questions but not answer them.

 

Thank you I will find the right forum.