One CPU Always Shown as Busy on Multiple-Processor Computer

ID: Q241532

The information in this article applies to:

Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server

SYMPTOMS

When you view CPU usage using Task Manager, one processor may appear to be busy, with from 50 percent to 70 percent usage, even when the computer is idle.

CAUSE

This behavior can occur if both of the following conditions exist:

Your computer uses an ASUS P2B-D, P2B-DS, XG-DLS, P2L97-D or P2L97-DS motherboard.

You choose to install the Advanced Configuration and Power Interface (ACPI) Hardware Abstraction Layer (HAL) during or after Windows 2000 Setup.

RESOLUTION

To resolve this issue, contact ASUS to obtain an update for the motherboard to enable ACPI support. For additional information, please visit the following ASUS Web site:

http://www.asus.com/Products/Techref/Acpi/win2000.html

The third-party contact information included in this article is provided to help you find the technical support you need. This contact information is subject to change without notice. Microsoft in no way guarantees the accuracy of this third-party contact information.

To work around this issue:

Start Windows 2000 Setup again.

When you see the following prompt, press the F5 key:

Press F6 if you need to install a 3rd party SCSI or RAID driver.

When you are prompted for the type of computer you are using, choose MPS Multiprocessor PC, and then continue Setup normally.

Additional query words:

Keywords : kbhw
Version : WINDOWS:2000
Platform : WINDOWS
Issue type : kbprb