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Article ID: 326863 - Last Review: January 12, 2015 - Revision: 3.0

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The throttling function feature may not work as expected. This may cause an overheating problem for the CPU that can cause physical damage.


Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
322389  ( ) How to obtain the latest Windows XP service pack

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: (
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language. The English version of this fix 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.

Windows XP without SP1:
   Date         Time   Version      Size             File name
   09-Sep-2002  07:57  5.1.2600.54  1,848,320 bytes  Ntkrnlmp.exe
   09-Sep-2002  07:57  5.1.2600.54  1,902,208 bytes  Ntkrnlpa.exe
   09-Sep-2002  07:57  5.1.2600.54  1,875,456 bytes  Ntkrpamp.exe
   09-Sep-2002  07:57  5.1.2600.54  1,880,064 bytes  Ntoskrnl.exe
Windows XP with SP1:
   Date         Time   Version        Size             File name
   09-Sep-2002  07:57  5.1.2600.1120  1,891,840 bytes  Ntkrnlmp.exe
   09-Sep-2002  07:57  5.1.2600.1120  1,948,032 bytes  Ntkrnlpa.exe
   09-Sep-2002  07:57  5.1.2600.1120  1,920,512 bytes  Ntkrpamp.exe
   09-Sep-2002  07:57  5.1.2600.1120  1,924,224 bytes  Ntoskrnl.exe


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
  • Microsoft Windows XP Professional
kbnosurvey kbarchive kbautohotfix kbhotfixserver kbqfe kbwinxpsp2fix kbbug kbfix kbwinxppresp2fix KB326863
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