Microsoft KB Archive/276247

= CPU Fan on an IBM ThinkPad Computer May Not Start =

Article ID: 276247

Article Last Modified on 2/21/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q276247



SYMPTOMS
When you run a program that uses a large percent of the CPU on an IBM ThinkPad computer that is using battery power, the CPU may become hot and the fan may not work.



CAUSE
This problem can occur when the Acpi.sys file prevents the fan from rotating when your computer is in the Silence mode.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English-language version of this fix should have the following file attributes or later:   Date      Time    Version        Size     File name ---  10/25/00  1:59PM  5.0.2195.2565  163,024  Acpi.sys



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 Windows 2000 Service Pack 2.



MORE INFORMATION
For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Keywords: kbhotfixserver kbqfe kbbug kbenv kbfix kbhardware kbsyspreptool kbwin2000presp2fix KB276247

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