What to do when the operating system does not recognize a USB device

1, right click on the "Computer", on the right-hand side of the list to choose "Management";

2, click to open the Computer Management under the "Device Manager";

3, in the "Device Manager", click "Universal Serial Bus Control", in the bottom of the "USB Root hub" Device list, right click on "USB Root hub" to its "Disable" menu and then "Enable";

4, complete the above operation and then insert the U disk to the computer to try, do not need to restart the computer.

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