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

Anonymous
2009-12-09T22:20:11+00:00

I have Windows 7 Ultimate. Since very recently an unknown device keeps popping up in the device manager every time I start Win. It's reported location is within the front USB root hub but I haven't changed there anything lately. The device status reports "Windows has stopped this device because it has reported problems (Code 43)". I can uninstall/disable it but it will get picked up again the next time I reboot. All other usb devices (mouse, keyboard, web camera, APC UPS, external drive, printer) work fine. How do I get rid of this nuisance so that it doesn't reappear?

Windows for home | Previous Windows versions | Devices and drivers

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Anonymous
2009-12-11T14:02:16+00:00

If the problem coincided with hooking up the APC UPS that may indicate the problem is with the UPS.

Somewhat similar situation discussed in the following link:

http://www.velocityreviews.com/forums/t527369-apc-ups-usb-as-unknown-device.html

Your situations seems similar as from the "System Information" file the "problem device" has an Error Code "This device is working properly" yet remains an "Unknown Device".

I would suggest to detach the APC UPS from the computer and uninstall any related software.

Restart the computer and see if the "Unknown Device" problem resolves.

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  1. Anonymous
    2011-12-02T13:45:56+00:00

    Hi marioskasinos,

    Have you tried updating the driver for the webcam?

    Also, can you download and run USBDeview:

    http://www.nirsoft.net/utils/usb_devices_view.html

    What device is showing for Port_#0005.Hub_#0004 and what information is given? You can right-click and copy the info.

    Also, what computer (make/model) do you have?

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  2. Anonymous
    2011-12-02T13:52:37+00:00

    unknown device

    Try again doing the following steps:

    In the Device Manager locate and right-click the unknown device > Properties > Details, then choose "Hardware Ids" from the drop-down menu under "Property".

    What information is given?

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  4. Anonymous
    2011-12-02T16:29:11+00:00

    Hi auggy and thanks a lot for your reply...

    I tried to find drivers but everytime i try something, it says that all the drivers are already installed on my pc.

    When i right click it says: 'unknown device'.

    I am using HP Pavilion Entertainment PC.

    And also, on this PC there are some 'touch screen' buttons (for the volume etc..) which also do NOT work....

    it is so frustrating...

    hope to find out a solution because my PC is quite new

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