Can't connect to USB

Hi

When I plug my device into my PC, I get a charing symbol, but no connect to the computer to transfer data. I've gone through all the troubleshooting options of reinstalling garmin express etc, but nothing changes.

Is there any way to update the course files via blue tooth instead?

Or is my only option buying a new cable (which I think might be the issue at this point)

Cheers

Ryan