Consider the following scenario:

•	You are running a Windows Vista-based computer.
•	You try to update or to install video or audio AVstream device drivers.
•	The corresponding device is in suspend mode.

In this scenario, the computer crashes. Additionally, you receive the following Stop error message:For example, when you upgrade Windows Vista to Windows Vista Service Pack 1, the video and audio AVstream device drivers are updated. Therefore, in this situation, you may experience this issue.

Back to the top

A hotfix is available to resolve this issue. To access this hotfix through Windows Update, visit the following Microsoft Web site:

Back to the top

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

No prerequisites are required.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use this hotfix, you do not have to make any changes to the registry.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, x86-based versions

File name	File version	File size	Date	Time
ks.sys	6.0.6000.16651	191,488	08-Mar-2008	3:32:25
ks.sys	6.0.6000.20788	191,488	08-Mar-2008	3:25:08

Windows Vista, x64-based versions

File name	File version	File size	Date	Time
ks.sys	6.0.6000.16651	191,488	08-Mar-2008	3:14:07
ks.sys	6.0.6000.20788	191,488	08-Mar-2008	3:07:50

Back to the top

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Back to the top

For more information about AVstream, visit the following Microsoft Web site: For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Back to the top