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      Dolby Audio driver cannot start after upgrading to Windows 8.1

      The following tip is created based on a Lenovo Forums/Microsoft solution. For more information, please visit:

      The following tip is created based on a Lenovo Forums/Microsoft solution. For more information, please visit:

       

      Question

      After a recent update to Windows 8.1, I restarted my system and I get this message:

      I can't find any reference to Dolby Theater or Audio in any app or Device management.

       

      Affected Configurations

      The above symptom is associated with, but not limited to, the following systems:

      • Lenovo U310, U410
      • Lenovo G780

       

      Applies to
      • Microsoft Windows 8.1

       

      Solution

      The following proceedure has been reported to be successful by many members in the Lenovo community.  

      It is possible that Windows is installing an alternate driver as part of the 8.1 update process. Restoring the original Lenovo driver may resolve the issue.

      1. Unistall the Conexant Audio Driver (from device manager).

        • Open Device Manager (Right-click the Windows button (the Start button) in the lower left corner of the Desktop screen. In the menu that opens, click Device Manager. Or press the key combination [Windows + X], then simply click on the text Device Manager. ) 
        • Uninstall the Audio Device Under Audio inputs and outputs
        • Then proceed to Control Panel / Programs / Uninstall a Program
        • Uninstall all Dolby Related programs
        • Restart if Prompted
      2. Reinstall it from the drivers partition (d:\drivers\audio).

      3. Install the Dolby Home Theater software (d:\drivers\audio\DolbyGUI)

        Depending upon individual system configurations that can vary by model, the drivers may be stored on C, D, E or other drive letter.  View another related discussion on this issue here - the solutions are all variations of uninstalling the drivers Windows installed and then either locating othe original drivers on one of the drive partitions, and reinstalling from there or downloading and installing the drivers from the lenovo support site.  

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      • Alias ID: IG20140318-001
      • Document ID: HT080447
      • Last Updated :07 Mar 2016
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