Unable to use USB flash drive, USB socket is disabled. What happened?

Unable to use USB flash drive, USB port is disabled. The method of lifting the ban is as follows:

1 First of all, when accessing USB devices does not respond, first check whether the registry has been tampered with.

Click Start-Run, and enter regedit in the pop-up dialog box to open the windows registry.

2. In the list on the left, select "HKEY_LOCAL_MACHINE" option.

3. Select the "System" option.

4. Select the "Current Control Settings" option.

5. Select the "Service" option.

There are many options for the service, so we choose "USBSTOR" from the drop-down list.

7. In the list on the right, double-click the Start option.

8 "Start" is the working switch of USB device. The default setting is "3" for manual operation, "2" for automatic operation and "4" for deactivation. If your is disabled, please change it to "3" here.

The USB client software is located at the highest level of the software structure and is responsible for handling specific USB device drivers. The client layer describes all software portals that directly act on devices. When the system detects the device, these client programs will directly act on the peripheral hardware. This unique feature places the USB system software between the client and its device, which needs to be processed by the client program according to the device image formed by USBD at the client.

The front USB interface can only be used if it is connected to the corresponding front USB pins on the motherboard (generally 8-pin, 9-pin or 10 pin, two USB are paired, and each USB uses 4 pins for signal transmission and power supply). When connecting the front USB interface, be sure to read the relevant contents in the motherboard manual and chassis manual carefully in advance, and never connect incorrectly, otherwise it will damage the USB device or motherboard.

Jeff Ravencraft, chairman of the USB Developer Forum and technical strategy officer of Intel Corporation, said that wireless USB technology will help users get rid of complicated cable connections when connecting printers, digital cameras, music players and external disk drives with personal computers.