1, USB mode jumper cap dropped?

2. The USB device itself has serious problems such as short circuit (as long as everything plugged into the USB interface of the computer belongs to the USB device). In this case, just unplug the USB devices one by one, and you can find out which USB device is broken.

3. The usb module or chip of the motherboard itself is broken. This situation can only be sent to a professional repair shop.

This solution is described in detail below.

1, click my computer properties first,

2. Click "Driver Signature" under hardware, select "Ignore" and finally confirm.

3. Then go to Device Manager.

4. Extend to universal serial bus routing controller,

5. Right-click the USB with the red exclamation mark, select Update Driver, and then install the driver step by step.