DavidPhares wrote:
This is just one reason I ALWAYS back up all my images onto THREE external USB drives. They are cheap and redundancy = security.
Try the drive on another computer. If that computer will accept the drive, copy all files onto a second drive. Now take the problem drive back to your Windows 10 computer and do a full reformat, not just the quick one. Once it is formated, you can copy your images back onto it.