Performance Counter Problems with VIA 686B and Intel 815x Chipsets in Windows XP

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Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article has been archived. It is offered "as is" and will no longer be updated.
In Windows XP, you may experience poor video capture and erratic System Monitor readings if your computer has either of the following chipsets:
  • Intel 815x chipsets with Advanced Programmable Interrupt Controller (APIC)
  • VIA 686B chipsets
The VIA power management timer hardware originally worked incorrectly, and a patch was applied to the hardware abstraction layer (HAL) to fix the problem on Intel 815x chipsets. Since that time, the VIA chipset was modified to correct the timer problem, but this causes the patched HAL to give incorrect timing values. This makes video capture "choppy," and causes System Monitor to generate incorrect readings under some conditions. The problem occurs with Intel 815x chipsets with APIC, and with the VIA dev_1106 and ven_0686 power management timers when you use a video capture adapter with a composite-in port.
To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
322389 How to Obtain the Latest Windows XP Service Pack

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.

File information

The English version of this fix should have the following file attributes or later:
   Date         Time   Version      Size     File name   ------------------------------------------------------   29-Oct-2001  08:57  5.1.2600.17  129,280  Halaacpi.dll				

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows XP Service Pack 1.
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 310718 - Last Review: 01/11/2015 21:09:08 - Revision: 1.0

Microsoft Windows XP Home Edition, Microsoft Windows XP Professional

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