What to do if you do not operate the USB-port of a computer

If your computer refuses to respond to the USB-device, try these methods. Not help one - go to the next.

Restart the computer

As silly as it sounds, since it is USB-device can make.

Check the connected device and port

Before we deal with the entrance, you need to find out whether the connected device itself properly.

1. Paste it into a different port.
2. If the PC still does not respond or gives an error, then the problem is in the device.
3. Disconnect the device and re-insert, but stouter. Perhaps out just cranky.
4. The device work? Then the problem is really in the port.

Clean the USB-ports

Turn off the computer and see if there is dirt and dust inside the port. This is especially true for desktop PCs, in which part or all of the ports are located at the rear. Dust can also prevent flow of air and, consequently, reduce performance.

Take a can of compressed air and clean them all the inputs.

If there is no cartridge, try to use a vacuum cleaner.

Check the list of devices connected to the computer

Through it, you can obtain information about the USB-devices, and in some cases and fix the problem with the ports.

on Windows

1. Enter in the search for the operating system request "Device Manager" and open it.
2. Look for the section "Controllers USB» and expand it.
3. Do you need a paragraph with the words "The Extensible Host Controller".

This item is not? This may explain why your USB-device does not work. Click on "Scan for hardware changes" on the taskbar: this icon with blue screen and magnifying glass. Probably the desired item appears after the test, and the device will work as it should.

If the host controller is listed, try reinstalling it.

1. Click on the right-click and select "Remove device".
2. Do this with each such controller, if there are several.
3. Restart the computer.

After Windows starts, the controllers will automatically reset, and the port may work.

on macOS

1. Open the Apple menu and select "About this Mac».
2. Open the "Report System".
3. In the category "Hardware", select USB.

On Apple computers can only view information on USB flash drives and external hard drives. If working port, the device will appear in the list. This space, as is the case with Windows, you have unfortunately not.

Deactivate temporarily disable USB-ports

on detection USB-devices may affect power management settings, especially if you have a laptop. temporarily disable the USB function is designed to reduce energy costs and usually works correctly. But at the very least worth checking out and it.

on Windows

1. In the operating system, enter the search and select the "Change the power scheme."
2. In the window that opens, click "Change advanced power settings."
3. In the category of "Options USB» you will find one or two points, depending on whether you have a desktop computer or laptop. Both need to put a "forbidden."
4. Save the settings and reboot the PC.

on macOS

1. From the Apple menu select "System Preferences."
2. Open the section "Saving energy".
3. The tabs "Battery" and "Network Adapter" uncheck "It is possible to transfer disks to sleep."

Repair the entrance

Ports are soldered to the circuit board inside the computer: is usually not a parent, but to separate. If you frequently use the USB-devices, the ports may become loose or fall off completely.

Often this is due to the shape of the connected devices, in particular cables and old flash drives. They can be quite heavy and fragile outweigh the entrance.

Unfastened input may indicate breakage. Plug the device into the entrance and a little stir it. The connector does not wobble. If loose, secure it with a soldering iron.

If the USB-port is not unsteady, but still does not work, it must be replaced. Make it yourself easy. Chances are, too, need a soldering iron. For example, as in this video:

If you are not confident in their abilities, consult a specialist.