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
    2011-09-20T18:06:38+00:00

    I replaced my USB device with a Belkin lead and the problem was rectified straightaway, The device I had been using was a cheaper  version but as soon as I used the Belkin USB lead to link my computer to my printer the error 43 code did not appear, the device was recognised and I am now using my HP printer successfully

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  2. Anonymous
    2011-09-30T17:02:55+00:00

    Hello,

    I have a Acer Aspire 5920g and i have build in camera crystal eye. And if some how i made it to work after the restart is like unknown device. I tried somany thinks and i don''t have ani selutions. The code is 43. Is there any way to make it work?

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  3. Anonymous
    2011-10-24T15:41:03+00:00

    Same problem here. I sent my computer in 3 times being it was in warranty, would come back everything working fine.

    I finally figured out it was windows. I would disable, uninstall, whatever I could to try to get rid of it but it would come back like some evil entity. There's a tower looking thing in Devices and Printers, plus 2 USB   ports working or not (goes back and forth) and a visual and a clunking sound depicting an error.

    All I'm running is my keyboard, speakers, mouse. Have unplugged all and it's still there.

    It interferes with  any and all audio  

    Driving me crazy (short trip)

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  4. Anonymous
    2011-10-31T00:26:45+00:00

    Where can I get the Belkin 2 solution?  Please help

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