Here is how to fix USB Ports Not working In Windows 10 You can attach the USB device that is not being recognized, to any of the USB ports Press WIN+R keys together to open the Run dialog box. Once it opens up, type in devmgmt.msc and hit enter key. A separate window named Device Manager opens up. You need to find and expand the entry named Universal Serial Bus Controllers. Under the entry, find Unknown USB Device marked with a yellow warning sign. Right click on it and click on the Uninstall option. Finally, find the tab named Action at the top and choose Scan for hardware changes as shown in the screenshot given below. That’s it. Your USB device should work now. Source:- http://merabheja.com/fix-usb-ports-not-getting-recognized-windows-10/

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 Outdated drivers.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 Outdated system hardware.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/