The battery in your computer with a Pentium III-M Tualatin
processor may lose its charge sooner than you expect. This symptom occurs on
computers that have a Pentium III-M Tualatin processor that uses the legacy IST
This problem may occur if the P3.sys driver is not
initialized correctly. When this occurs, the B1 step of the SpeedStep-capable
processor is not enabled, so your battery charge may drain faster than
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:
How to obtain the latest Windows XP service pack
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.
Date Time Version Size File name
25-NOV-2002 13:59 5.1.2600.1145 37,632 P3.sys
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows XP Service Pack 2.
If you use Windows Vista, you can visit the following Microsoft Web page for help with power consumption and battery life problems:
For additional information about the Pentium III
Tualatin Processor, click the following article number to view the article in
the Microsoft Knowledge Base:
A Pentium III Tualatin Processor and 440MX Chipset Combination with a Legacy Interface Is Not Initialized