etrex 20 dropping from basecamp

Former Member
Former Member
Newbie to Garmin and have had issues with my etrex 20 being dropped while transferring data to Basecamp.
Little green bar slows to a crawl then stops and soon after device disappears.
Even before this problem when I was able to have data transfer there were issues loading topo maps from Basecamp.
Purchased new cable when told by support it was a cable connectivity issue. Worked the first time I used it but not since.
Windows 7 Home edition.
Any suggestions?