Information about audio device drivers that are known to cause problems when you install Windows Vista service packs

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Article ID: 971220 - View products that this article applies to.

Support for Windows Vista without any service packs installed ended on April 13, 2010. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows

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INTRODUCTION

Windows Vista service packs update several system files and device drivers. When Windows Vista service packs are installed, some older drivers are reinstalled. When these drivers are reinstalled, audio problems may occur. This article lists the device drivers that are known to cause problems when you install Windows Vista service packs. It also provides information about how to update your drivers.

This article is intended for intermediate-to-advanced users. If you are a beginner-level user who is trying to troubleshoot an audio problem that was triggered by the installation of a Windows Vista service pack, or for more information generally, click the following article number to view the article in the Microsoft Knowledge Base:
948481 How to troubleshoot sound problems that you experience after you install a Windows Vista Service Pack

MORE INFORMATION

The following table lists device drivers that are known to cause problems when you install Windows Vista service packs.

Note This is not intended to be a complete list of problematic audio device drivers.
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Audio drivers Options for obtaining updated drivers
Realtek AC'97

For x86-based computers: Alcxwdm.sys - version 6.0.1.6242 or earlier.
For x64-based computers: Alcwdm64.sys - version 6.0.1.6242 or earlier.

Check for updated drivers on Windows Update.
Contact the hardware manufacture to obtain updated drivers.
IDT/SigmaTel

For x86-based computers: Sthda.cat - published 12/17/07 or earlier.
For x64-based computers: Sthda64.cat - published 12/17/07 or earlier.

Contact the hardware manufacture to obtain updated drivers.
IDT/SigmaTel

For x86-based computers: Stwrt.cat - published 12/17/07 or earlier.
For x64-based computers: Stwrt64.cat - published 12/17/07 or earlier Exceptions for IDT/SigmaTel drivers were made on certain models of Dell, HP, and Sony computers because these drivers were updated to address this issue before the 12/17/07 publish date.

Contact the hardware manufacture to obtain updated drivers.
Creative Audigy

For x86-based and x64-based computers: P17.sys - versions earlier than 5.12.1.2004.

Note Creative encourages users who do not already have version 5.12.1.2004 installed to update to this version of the driver before they update to a Windows Vista service pack.

Contact the hardware manufacture to obtain updated drivers.
Conexant HD Audio
For x86-based computers: Chdart.sys - version 4.32.0.0 or earlier.
For x64-based computers: Chdart64.sys - version 4.32.0.0 or earlier.

Check for updated drivers on Windows Update.
Contact the hardware manufacture to obtain updated drivers.

How to determine the audio driver and version

You can use the DirectX Diagnostic tool to identify an audio driver and version. To do this, follow these steps:
  1. Click Start
    Collapse this imageExpand this image
    Start button
    , type dxdiag in the Start Search box, and then press ENTER.
  2. Click the Sound tab.
  3. Under Drivers, locate the Name and Version items.
  4. Click Exit.

How to contact the hardware manufacture to obtain updated drivers

For information about how to contact hardware and software vendors, visit the following Microsoft Web site:
http://support.microsoft.com/gp/vendors
Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

How to update drivers by using Windows Update

You can visit Windows Update at any time to see whether it has found new drivers for your hardware.

To update drivers by using Windows Update, follow these steps:
  1. Click Start
    Collapse this imageExpand this image
    Start button
    , click ALL Programs, and then click Windows Update.
  2. In the navigation pane, click Check for updates.
  3. To see whether updated drivers are available, click View available updates. Windows Update will list any updated drivers that are available for devices that are installed on the computer.
  4. If updates are available, click the driver that you want to install, and then click Install.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Properties

Article ID: 971220 - Last Review: May 19, 2009 - Revision: 1.2
APPLIES TO
  • Windows Vista Service Pack 2
  • Windows Vista Service Pack 1
  • Windows Vista Enterprise
  • Windows Vista Business
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Starter
  • Windows Vista Ultimate
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
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