USB Code 43 Error in Device Manager [Solved]

Camilla Mo, in Driver Error Tags: DriversWindows


Unknown Device: Windows has stopped this device because it has reported problems. (Code 43)

If your external USB device is recognized as unknown device in Device Manager, it usually indicates code 43 error, which can be caused by several reasons. Use solutions below to fix the error. Work for Windows 10, 7, 8, XP & Vista.

Solution 1: Unplug the Device then Plug it back in

Unplug the device then plug it back in. This simple fix may work for you like a magic.

Solution 2: Try a Different Cable


Windows is unable to recognize your USB device might due to a broken cable. Connect the device to your computer using a different cable and see if the error resolves. 

Solution 3: Perform a Power Reset 

If you are using a laptop, follow these steps to perform a power reset:

1. Unplug the USB device 
2. Turn off the computer
3. Take out the battery 
4. Allow the PC to set for about 5 minutes. This is to discharge any electrical build up.
5. Put the battery back into place.
6. Reboot your computer

If you are on a desktop, follow these steps:

1. Unplug the USB device
2. Turn off the computer
3. Unplug the power supply cable
4. Hold down the power button for over one minute. 
5. Plug the power supply cable again
6. Restart your computer

Solution 4: Uninstall the driver

If the driver is not installed correctly, the error would occur. Try uninstalling the driver and let Windows to install the driver again. Follow steps below.

1. Open Device Manager.

2. Right-click on the name of problematic device and select Uninstall. Then follow the on-screen instructions to uninstall the driver.



3. After uninstalling the driver, reboot your PC for the changes to take effect. Then Windows may install the driver automatically.

Solution 4: Update the driver

If uninstalling driver doesn’t work for you, you can try installing the driver. You can go to the PC manufacturer’s website to download the latest USB drivers.

If you have difficulty downloading drivers manually, you can use Driver Easy to help you. Driver Easy can scan your computer to detect all problem drivers, then provide you with new drivers.



Driver Easy has Free version and PRO version. Both versions can be used to download drivers. Download the Free version to have a try. If you find it helpful, upgrade to the PRO version. With the PRO version, you can even update all drivers with just one click. You will enjoy 30-day money back guarantee. You can ask for a full refund if Driver Easy doesn’t help resolve the problem.

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