Unable to Change a Resource Setting in Device Manager

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This article was previously published under Q269491

For a Microsoft Windows XP version of this article, see 315278 (http://support.microsoft.com/kb/315278/EN-US/ ) .

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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.

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CAUSE

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

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STATUS

This behavior is by design.

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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 (http://support.microsoft.com/kb/237556/EN-US/ ) How to Troubleshoot Windows 2000 Hardware Abstraction Layer Issues

252420 (http://support.microsoft.com/kb/252420/EN-US/ ) General Description of IRQ Sharing in Windows

216251 (http://support.microsoft.com/kb/216251/EN-US/ ) How to Specify a Specific or Third-Party HAL During Windows 2000 Setup

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