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stac97.sys Windows process - What is it?

    "stac97.sys" is a Windows driver for SigmaTel (Freescale) audio devices and is known as the AC'97 Audio Controller with SigmaTel CODEC device driver. It is also known as the Sigmatel C-Major STAC 9750 AC97 WDM Audio Driver. The file handles AC'97 audio processing for select sound cards and uses a codec device driver to handle format processing.


    Sigmatel c-major audio driver manufacturer is sigmatel and developed by sigmatel in the database contains 29 versions of the sigmatel c-major. It is working on ac97 wdm sigmatel stac-9250 audio agreement. It is stereo and antivirus scan results. Device manager shows all ok, but control panel > sound properties > volume says no audio device.

SigmaTel C-Major Sound Card Driver for Win7 RC? …

    My Gateway M675PRR laptop says it has a SigmaTel C-Major Audio driver (STAC97.sys, version 5.10.4201 as an example) which works in Vista (x86). There was no support in either the Win7 beta or RC and therefore no sound. Attempting to find a driver on catalog.update.microsoft.com produces no hits for SigmaTel and a million for Realtek's AC97 …

updating sound driver - Dell Community

    I've got an Inspiron 6000 and my sound driver is: SigmaTel C-Major Audio STAC97.sys version: 5.10.4255.0000 Does anyone know if and where there

Audio - No audio device - TechSpot Forums

    Device Description SigmaTel Audio Driver Module STAC97.sys Driver Description SigmaTel C-Major Audio Driver Date 02-26-02 Driver Version Driver Provider SigmaTel INF File oem4.inf

Audio: SIGMATEL STAC 92XX C-Major HD Audio Driver …

    Download Audio: SIGMATEL STAC 92XX C-Major HD Audio Driver Version A07 for Windows to mEDIA driver

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