You should back up any personal files on that drive that you can access. Just copy them to another disk. Then I suggest running chkdsk for that drive. To do this, open the command prompt window as administrator. Specifically:

1. Find out the drive letter of that external drive (for example, it might be something like F or G).

2. Find the Windows Search bar at the lower left of the screen. You might need to click the Windows "Start" button.

3. Type "cmd", right-click on "cmd" when it appears and click "Run as Administrator"

4. Enter the command:
chkdsk <Your hard disk letter>: /f

Note - if you only want to know if there's a problem without trying to fix it, then omit the "/f"

Andrew
PG Music Inc.