Microsoft KB Archive/940059

= Severe video degradation and a Stop error may occur on a Windows Vista-based computer when you connect a USB Webcam =

Article ID: 940059

Article Last Modified on 8/29/2007

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APPLIES TO


 * Windows Vista Home Basic 64-bit Edition
 * Windows Vista Home Premium 64-bit Edition
 * Windows Vista Business 64-bit Edition
 * Windows Vista Enterprise 64-bit Edition
 * Windows Vista Ultimate 64-bit Edition
 * Windows Vista Starter
 * Windows Vista Home Basic
 * Windows Vista Home Premium
 * Windows Vista Business
 * Windows Vista Enterprise
 * Windows Vista Ultimate

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SYMPTOMS
You connect a USB Webcam to a Windows Vista-based computer that is using an AMD chipset. Then, you may experience severe video degradation in both the video output of the Webcam and the video output of other video-based programs. You may also receive a Stop error on a blue screen. This problem occurs when the output resolution of the Webcam is set to 960 × 720 or to a higher resolution.



Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

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, 64-bit versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
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.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: webcam video camera Southbridge 600 SB600 Logitech QuickCam Ultravision STOP BugCheck Bug Check BSOD hang freeze NMI bluescreen blue screen

Keywords: kbbug kbfix kbqfe kbexpertisebeginner kbhotfixserver kbwinvistapostrtmfix KB940059

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