Why is my external drive not mounting to my desktop anymore?

Episode 1081 (1:42:15)

Lance from Los Angeles, CA
NewerTech

Chris had a backup drive that suddenly stopped mounting to his computer. Leo says it could be a drive failure. It could also just be the enclosure that the drive is in. Circuitry can go bad.

If that didn't solve the issue, NewerTech makes a universal hard drive adapter which would allow him to take that drive and connect it to a Windows machine via USB. Then he should do a low level format.