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

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