Sigmatel Driver for Win 7 - Audio - Laptop - Dell Community

Sigmatel Driver for Win 7


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Sigmatel Driver for Win 7

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I recently upgraded (?) my Inspiron 6400 to Win7.  Although I now regret doing it, I need to sort it out as I cannot go back to Vista.  Is there a Sigmatel audio driver for Win7?  Dell does not offer a driver.  I visited the manufacturer's site and they do not offer OEM support. 

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  • The Vista driver, on the Dell downloads, should work for Win 7.  I've upgraded several different PC's, a laptop of my own and several client's PC's and the Vista drivers, including sound, worked for all of these.  Win 7 is basically Vista "Improved".

    What indication or error are you getting?  Have you tried installing the Dell driver? 

    I am not a Dell Employee

    Dell forum member since 2002

    Inspiron 15 - 5577 Laptop

    Home Built Desktop PC with ASUS Z170, i7 6700K CPU,  Windows 10 64 bit Pro. SSD drive.  Studio One 3 Recordng Studio Software.

    Dell SE2717HR 27" Monitor


    Member of Nashville based R.O.P.E.

  • I'm not sure if they're compatible but I'm running Windows 7 on my Inspiron 9300 and her's my info:

    R99254 dell windows 7 sigmatel c-major audio driver:

    Title      : Audio:SIGMATEL STAC 975X AC97 Driver
    Version    : A03
    OEM Name   : SIGMATEL
    OEM Ver    :
    Computers  : Inspiron - 6000, 9300, 9200, 2200, 1200, XPS Gen 2;
    Latitude - D610, D810, 110L, D510, D410, X1;
    Precision - M20, M70;
    XPS - MXG051
    Oses       : Windows 2000 Professional, Windows 3.x Pro-SBE, Windows Vista 32-bit Business, Windows Vista 32-bit Home Basic, Windows Vista 32-bit Home PremiumWindows Vista 32-bit UltimateWindows XP Home EditionWindows XP Professional
    Languages  : Brazilian Portuguese, Chinese-S, Chinese-T, English, French, German, Japanese, Korean, Spanish
    Created    : Tue Jan 23 13:52:44 CST 2007

  • Normal 0 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4

    1. decompresses (email me at  for the new driver )

    2. to open your system first, in the window directory entered c:\Windows\system32\Driverstore\FileRepository to find the folder wdmaudio.inf_x86_neutral_aed2a4456700dfde

    3. a right click to  obtains the administrator property rights of the folder (wdmaudio.inf_x86_neutral_aed2a4456700dfde)

    4. open (wdmaudio.inf_x86_neutral_aed2a4456700dfde) the folder to delete all files.

    5. returns to the folder which you just decompressed

    6. Copy all 7 files of new driver to folder "wdmaudio.inf_x86_neutral_aed2a4456700dfde"

    7. re-installs the sound card


    Any question, email me


    Good Luck

    <ADMIN NOTE:Email Id removed per privacy policy>


  • Hello, this same problem that exists when upgrading from XP to Vista. Dell already has posted a solution to this, with a suitable update here: