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
    2013-01-27T21:35:10+00:00

    I just updated my LogiTech C270 camera and now I'm getting error code 43.  Someone on the first page mentioned this.  Any ideas?  I can't use the USB or the card readers on my Power Up! card reader.

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  2. Anonymous
    2013-01-20T09:15:19+00:00

    Hi I have delete the INFCACHE.1 at C:\Windows\System32\Driver Store)

    Just try this, but first you must unplug you Device then connected again

    (Removed by FM)

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  3. Anonymous
    2012-09-17T22:46:18+00:00

    Geez, with this many people having problem, it would make sense for APC to fix the problem already.  I have the same exact problem.  It not because I have a bad cable or USB hub. It doesnt make a difference for me which one I use.

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  4. Anonymous
    2011-12-02T16:46:31+00:00

    A couple of things to check that may help.

    Can you do the following?:

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

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

    Also, in the Device Manager right-click the "Unknown Device" > Properties > Details, then choose "Hardware Ids" from the drop-down menu under "Property".

    What is listed under "Value"?

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