What should I do if all the USB interfaces have power but are malfunctioning? USB interface repair tips

php editor Zimo will answer your question. When all USB interfaces have power but fail, there may be some common problems that cause the failure. First, you can try to replug the device or replace the USB cable to make sure the connection is normal. Secondly, check whether the device driver is installed correctly. You can try to update or reinstall the driver. Also try disabling and re-enabling the usb root hub in device manager. If the problem is still not resolved, you may want to consider replacing or repairing the USB interface hardware. Please note that if you do not have the relevant technical knowledge, it is recommended to seek professional help to avoid more serious damage.

What should I do if all the USB interfaces have power but fail?

Method 1. Check the fault of the device itself

First check whether the problem lies with the device itself and unplug it (if it is a USB storage device, select "Eject" on the computer), Try plugging it into another computer.

If you can work normally after changing the computer, it means the equipment is still good. If not, all you have to do is replace the USB device with a new one.

Method 2. Check the power supply (only applicable to laptops)

The laptop’s power supply supplies power to the USB port. If there is a problem with the power supply, devices plugged into the USB port may also stop working.

1. Unplug the laptop and charger.

2. Restart the laptop

3. Reconnect the USB device to the laptop

4. Replug the power supply

Method 3. Check the power management Settings

To save power, Windows turns off USB controllers by default when they are not in use, and turns them back on when needed. But sometimes Windows doesn't open automatically.

1. Right-click the Start menu and open Device Manager.

2. Double-click to expand the "Universal Serial Bus Controller" column.

#3. Double-click the first "USB Root Hub" in the list.

4. Click to switch to the "Power Management" tab.

#5. Uncheck "Allow the computer to turn off this device to save power" and click "OK".

#6. Repeat steps 3-5 for each "USB Root Hub" in the Universal Serial Bus controller list.

Method 4. Check the USB device driver

The unresponsiveness of the USB port may also be caused by the driver. To check whether there is any problem with the USB device driver, the most convenient and labor-saving way is to directly use the driver to detect it.

1. Click below to download and install [Driver Life 8].

2. Click "Driver Management" and click "Scan Now". Driver Life will scan your computer and display the normal or abnormal status of the driver.

#3. If a problem with the USB device driver is detected, click "One-click Repair" and the software will automatically update the missing or outdated driver for you.

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