L channel sound comes through both L and R speakers after installing IDT High Definition Audio Codec

I noticed a sound problem on my laptop. The R channel works as expected but the L channel is split between the L and R speakers. After checking several different possibilities I narrowed the problem down to the IDT High Definition Audio Codec that I downloaded from the HP driver support page for my notebook model and operating system.
I uninstalled the IDT High Definition Audio Codec and restarted. This forced Windows to resort to using its generic "HD Audio Device" default. When I did this the sound was equally split between the L and R speakers as I would expect - L channel 100% though L speaker, R channel 100% though R speaker. I then re-downloaded the IDT High Definition Audio Codec from HP (sp59654.exe), re-installed it, and restarted. Immediately the sound problem was back - while the R channel comes 100% though the R speaker, the L channel is split between L and R speakers.
Please note this has nothing to do with adjusting speaker "balance". Both L and R channel volumes were set to 100% while investigating this problem. It's definitely some sort of incompatibilty between the IDT High Definition Audio Codec and Windows 8 64-bit or the sound hardware in the HP Envy DV6.  
Here are my details:
IDT High Definition Audio Codec
Publisher: IDT
Date: 8/19/2012
Version: 6.10.6425.0
Notebook
HP Envy DV6-7200
Windows 8 64-bit

Here is what I would recommend you trying. Go to device manager and uninstall the audio driver. Once it is uninstalled, go to the device manager toolbar and select "Scan for hardware changes". After it completes, reboot the computer. Once the computer is rebooted, test the audio and let me know if that helped.
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    ****Click the White thumb to say thanks****
    ****Please mark Accept As Solution if it solves your problem****
    ****I don't work for HP****
    Microsoft MVP - Windows Experience

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    Thanks Viktoria, I appreciate you spreading the word
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    ****Please mark Accept As Solution if it solves your problem****
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    s
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    Hello DesertWildcat,
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    Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
    Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
    Dunidar
    I work on behalf of HP
    Find out a bit more about me by checking out my profile!
    "Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

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    **Click the KUDOS thumb up on the left to say 'Thanks'**
    Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

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    **Click the KUDOS thumb up on the left to say 'Thanks'**
    Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

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    I work on behalf of HP

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    ++Please click ACCEPT AS SOLUTION to help others, find this solution faster
    **I'm a Volunteer, I do not work for HP**

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    ****Click the White thumb to say thanks****
    ****Please mark Accept As Solution if it solves your problem****
    ****I don't work for HP****
    Microsoft MVP - Windows Experience

  • Re: IDT High Definition Audio CODEC (NO SOUND PROBLEM)

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    Hello DesertWildcat,
    Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
    I understand that you are having and issue with your HP EliteBook 8460p's audio not working. I am sorry, but to get your issue more exposure, I would suggest posting it in the commercial forums, since this is a commercial product. You can do this at Notebook - HP ProBook, EliteBook, Compaq, Slate/Tablet PC, Armada, LTE.
    I hope this helps. Thank you for posting on the HP Forums. Have a great day!
    Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
    Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
    Dunidar
    I work on behalf of HP
    Find out a bit more about me by checking out my profile!
    "Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

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    This question was solved.
    View Solution.

    That driver is known good and I used it in my notebook (see my sig)
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    Try modded driver from Toshiba driver Here
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  • Speakers And Headphones (IDT High Definition Audio CODEC)

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    ****Please click on Accept As Solution if a suggestion solves your problem. That will help another person facing the same problem to find a solution easily****
    2015 Microsoft MVP - Windows Experience Consumer

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