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
    2011-07-15T02:58:08+00:00

    Hi ALICASMARTY,

    Can you double-check the laptop model here:

    Start > type msinfo32 in the "Search programs and files" box and press "Enter" > System Summary

    In the right window what is the "System Model"?

    Also, what is the "System Type"?

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  2. Anonymous
    2011-07-15T00:10:17+00:00

    my laptom  sony vio .. pls i need help my webcame not working becouse its need mass storage controller devoice my laptoo name SONT VIO VGN-FZ13m

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  3. Anonymous
    2011-07-09T20:53:11+00:00

    Hi,

    Go under device manager and locate the device. Wait for it to locate it. That may work.

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  4. Anonymous
    2011-03-21T23:25:31+00:00

    You can add another one to this thread.  Searched EVERYwhere and still dealing with code 43.  Anybody try buying a product that fix this? like driver magician or something like that?  somebody must have fixed this once.

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