Thank you for posting your query in the Microsoft Community. As per the problem description external hard drive with USB 3 is not working.
· Do you get any error message?
· Are you able to access other USB devices?
· Have you made any changes on the computer prior to the issue?
I will help you with this issue. I would suggest you to follow these methods.
Method 1: Run the hardware and device troubleshooter.
Method 2: Try using the external hard drive on a different USB port and check.
Method 3: Try using the external hard drive on a different computer.
Method 4: Uninstall and reinstall all USB controllers, follow these steps:
a) Click Start, type
device manager in the start search box and press enter.
b) Expand Universal Serial Bus controllers.
c) Right-click every device under the
Universal Serial Bus controllers node, and then click Uninstall to remove them one at a time.
d) Restart the computer, and then reinstall the USB controllers.
e) Plug in the removable USB storage device, and then test to make sure that the issue is resolved.
Hope this helps. Let us know if you need further assistance with windows.
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