100 percent CPU usage may occur under some battery conditions

This article was previously published under Q328915

On this page

SYMPTOMS

After you install Windows XP Service Pack 1 (SP1), CPU usage may reach 100 percent under some battery conditions.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP.

Hotfix information

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows XP service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date Time Version Size File name ---------------------------------------------------------------- 11-Sep-2002 15:57 5.1.2600.100 13,184 Cmbatt.sys (pre-SP1) 24-Sep-2002 09:13 5.1.2600.1125 13,184 Cmbatt.sys (with SP1)

STATUS

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 Microsoft Windows XP Service Pack 2.

APPLIES TO

. Microsoft Windows XP Home Edition SP1

. Microsoft Windows XP Professional SP1

 © 2006 LBCI Corporation. All rights reserved Eng.Hanna Ata Lahoud