USB Device not recognized

Their are many reasons for this error some are
This issue can be caused if any of the following situations exist:

1. The currently loaded USB driver has become unstable or corrupt
2. Windows may be missing other important updates hardware or software issues
3. Your USB controllers may have become unstable or corru
4. Your PC requires an update for issues that may conflict with a USB external hard drive and Windows
5. Your PC motherboard may need updated drivers

Solution 

Uninstall and then reconnect the external hard drive

This method resolves issues where the currently loaded USB driver has become unstable or corrupt.

1. from the device manager

1. Right-click the USB external hard drive with the issue, and click Uninstall.
2. After the hard drive is uninstalled, unplug the USB
3. Wait for 1 minute and then reconnect the USB cable. The driver should automatically load

Check for the USB drive in Windows Explorer

Install Windows Update 

Reinstall USB controllers.

Install your motherboard's latest chipset drivers.