Win7 computer USB interface can not be used

1, when the setting is plugged into the computer USB interface, if the device can not work or use, it is recommended to replace the USB interface, or directly plug the device into the USB interface behind the computer chassis Try to solve the problem.
2. Check if the USB device is disabled: Right click on the computer and select “ Manage” entry from the pop-up menu.
3, in the "Computer Management" interface that opens, expand the "Device Manager" item, find the disabled USB port, right click and select "Enable".
4, we can also use the "big trend to USB management software" to control the computer USB interface. Press “Alt+F2” to wake up the main interface of the program, and check the “Restore the normal use of USB storage devices, mobile phones and Bluetooth devices”.
5, then clear the check related items: such as clear the check box to "disable the wireless network card", "and disable the portable Wifi" and other items. As shown in the figure:
6, at the same time connect the device to the computer USB, in the "Device Manager" to find the device is not properly installed, right-click and select "Update Driver" The driver's update installation operation is fine.