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What's DOS?
Posts: 2
Registered: ‎07-25-2014
Location: Tennessee
Views: 533
Message 1 of 3

C540 Touch sound problem

I have been researching, trying to figure out why my sound on my Lenova C540 Touch is not as loud as it used to be. I have the sound all the way up, but it's nowhere near as loud as it was when I first got the computer.


I think it might be because of the whole Windows 8.1/Dolby Advanced Audio problem I've read about in other posts. I confirmed that my Dolby Advanced Audio is not working.


However, none of the online solutions apply to me because they mention different drivers than what I have on this system. I don't have Convexant. When I click on the properties, details, of my speakers, it says Audio Endpoint. When I go to driver details, it says "no driver files are required or have been loaded for this device."


I tried to unistall/reinstall Dolby Advanced Audio, but that didn't do anything. Dolby still doesn't work.


Just for information, this is what is listed under audio inputs and outputs: microphone (lenova USB audio), speakers (RealTek High Definition Audio), Stereo Mix (RealTek High Definition Audio).


Please tell me what I can do to get Dolby running again and whether this will make my sound loud again.


Thanks in advance for any help.





Retired Support Specialist
Posts: 4,447
Registered: ‎04-22-2013
Location: Philippines
Views: 509
Message 2 of 3

Re: C540 Touch sound problem

hi jpschaper,


Welcome to Lenovo Community Forums!


Open Device Manager and Uninstall the audio Driver under Sound and gaming controllers,

    make sure to place a check under delete driver software prompt.


Open Control Panel Uninstall a program and uninstall all Dolby Related component.


Open Drive C: and Delete the folder says Driver or drivers


Install this driver

 Realtek Audio Driver V6832  



After installation open C: Driver/s

You should find the Audio driver folder and a dolby gui or pcee4 will be in ther and an installer of DolbyAA or advanced audio


Hope this helps





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What's DOS?
Posts: 2
Registered: ‎07-25-2014
Location: Tennessee
Views: 470
Message 3 of 3

Re: C540 Touch sound problem

Sorry I didn't get around to trying your solution until now.


It didn't work. I followed all of the directions. Dolby Advanced Audio still doesn't work and the volume level was not affected.


Should I have installed the other application that was included in the driver file--Dolby Home Theater--instead?


Do I need to run DolbySelectorTaskPatch.exe?

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