Microsoft KB Archive/269491

= Unable to Change a Resource Setting in Device Manager =

Article ID: 269491

Article Last Modified on 2/28/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q269491



For a Microsoft Windows XP version of this article, see 315278.



SYMPTOMS
On a computer that is running the Windows Advanced Configuration and Power Interface (ACPI) Hardware Abstraction Layer (HAL), you may not be able to change a resource setting for a device in Device Manager. If you modify the resource settings in the BIOS, the changes may not register.



CAUSE
The ACPI HAL controls resource assignments in Windows and does not permit user intervention.



STATUS
This behavior is by design.



MORE INFORMATION
Microsoft does not recommend that you change the HAL that is installed during the Windows Setup process. When you change from the ACPI HAL to the Standard PC HAL, you must reinstall the operating system. ACPI functionality is then lost. In some rare instances, you may need to have control over a resource assignment. You are only able to manually configure resources in Windows when the Standard PC HAL is used, and even then you may not be able to configure the device. The device must support the ability to manually set the resources.

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

237556 How to Troubleshoot Windows 2000 Hardware Abstraction Layer Issues

252420 General Description of IRQ Sharing in Windows

216251 How to Specify a Specific or Third-Party HAL During Windows 2000 Setup

Additional query words: grey greyed gray IRQ DM

Keywords: kbplugplay kbprb kbsetup KB269491

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