Here is how to fix USB Not Recognized message in Windows 10
After the USB is safely removed from the port, the computer disables the particular port which might be the reason for this error message.
The currently loaded device driver has become corrupt or unstable.
Outdated drivers.
The external drive is entering selective suspend.
The USB controllers have become corrupt or unstable.
Outdated system hardware.
Source:- [http://merabheja.com/fix-usb-not-recognized-message-windows-10/|http://merabheja.com/fix-usb-not-recognized-message-windows-10/]