Question about Microsoft Windows XP Professional

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I have e220 HSDPA USB MODEM but have tried to have it work on my toshiba satellite L45-S7423 but failed.When i open device manager it shows that high definition audio bus driver is missing ,could this be the problem?

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  • Paresh Haripursad
    Paresh Haripursad May 11, 2010

    When you say failed, what do you mean?

    High definition audio bus driver is for sound!Make sure you have with administrator rights(administartor logon).Do you have any 3g software already installed, if yes uninstall it.Your E220 will install the software once connected.Check if you have any drives mapped with the same drive letter as the E220 modem.



  • Ryan Frame
    Ryan Frame May 11, 2010

    Do you have a driver for this modem? Why don't you have a PCI modem? The USB is less reliable? First thing I may suggest is to run the New hardware wizard and see if the drivers are built into the modem. I that doesn't work just tell me. I will continue to troubleshoot your issue.

    Thank You,
    Ryan Frame
    Creative Energy Associates Technical Center


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Well high definition audio bus has nothing to do with the usb modem try installing the usb modem drivers on your system after plugging in the device
restart your computer
now try to use the usb modem it should work now

Posted on Jul 10, 2009

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