First insert the usb device into a computer interface, and then in the desktop left click "start" menu, click "run" command, type in "CMD" command to open the box, click the "ok" button.
Start the command prompt window and execute the following two commands respectively:
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v "DEVMGR_SHOW_DETAILS" /d 1 /t REG_SZ /f
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v "DEVMGR_SHOW_NONPRESENT_DEVICES" /d 1 /t REG_SZ /f
Restart the computer, in the open box type "devmgmt. MSC," click "ok" button or right click on the "my computer" icon on the desktop, the shortcut menu, select "properties" command in the system properties interface to switch to the "hardware" TAB, click the "device manager" button below.
Open the device manager and click view on the menu bar to show hidden devices.
Double-click the universal serial bus controller project to uninstall all of the following gray items and usb bulk storage devices.
Then right-click the "universal serial bus controller" project, and the drop-down menu pops up to select "scan check hardware changes".
Unplug the usb device and plug it in again.
If not, right-click the "USB Root Hub" project under the universal serial bus controller, and open the right-click menu to click the properties command.
Open the properties window to switch to the power management TAB, remove the "allow the computer to turn off this device to save power", click "ok" button (in turn modify the property of each USB Root Hub).