IBM Thinkpad T40 cooling fan actually does not need a special driver to work. However, if you have the following problem on the cooling fan on your IBM Thinkoad T40, then you need to update or install a special Embedded Controller Program build by IBM to solve the issues.
- Acceleration (pulsing) problem
- Always-on problem
Please note that this version of Embedded Controller Program will only work with BIOS Version 3.13 (or higher). Hence, if your BIOS is not updated, please ensure it is updated first before updating your system with this Embedded Controller Program, 1rhj10u2.exe.
For details installation guideline, please go to here.
Alternatively, you can try the Free Driver Scanner.
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