IBM ThinkPad Always Displays AC Power Icon

ID: Q228334

The information in this article applies to:

Microsoft Windows 2000 Professional

SYMPTOMS

When you place your computer on battery power after you upgrade your IBM 600-series laptop computer to Windows 2000 Professional, the icon for system power status on the right side of the taskbar does not change.

CAUSE

This issue can occur if the Basic Input/Output System (BIOS) does not properly implement Advanced Configuration and Power Interface (ACPI) functionality.

RESOLUTION

To resolve this issue, contact IBM to inquire about the availability of a fix for this issue.

MORE INFORMATION

For additional information about Windows 2000 ACPI support, please click the article number below to view the article in the Microsoft Knowledge Base:

Q216573 How Windows 2000 Determines ACPI Compatibility

Additional query words:

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