Toshiba notebook USB interface cannot be used. Solution:

　1 Make sure the USB interface is not damaged

2 First determine what kind of USB device is connected and cannot be used, and whether the device can be used normally on other computers. In order to eliminate hardware compatibility issues, it is recommended to use a USB mouse to test whether the USB port can work normally, and observe the USB mouse. Can the bottom light of the computer be bright normally?

3. Enter the device manager, right-click My Computer, then click Properties, then click Hardware, and then continue to click Device Manager

4. Right-click Click Uninstall to start uninstalling the USB device driver

5. After clicking Uninstall, a warning prompt box will pop up

6. Click OK to uninstall. After uninstalling all USB controllers, device management The device no longer has a Universal Serial Bus controller

7. At this point, the USB controller driver has been completely uninstalled, and then restarted, the system will automatically reload the USB driver

8. Sometimes the BIOS can also cause USB problems. In this case, you need to press F2 to enter the BIOS settings when booting, then press F9 to restore the BIOS settings, and then press F10 to save the BIOS settings