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Device manager shows "unknown device"

    Question

  • Hi

    I have doubt regarding device manger...When it display unknown device...Initially my reader working properly it display all things(device manger-reder name, usbview- all descriptors) correctly. some condition device descriptor corrpted..so unknown device display only in Japanse vista 32bit os, not in english os..why this happen in japanese os only?


    Ranjith

    Wednesday, June 19, 2013 7:21 AM

All replies

  • Start by looking at the details tab. Is the hardware a vid/pid of zeros? If so, your device failed to enumerate at the bus level

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    Wednesday, June 19, 2013 2:57 PM