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After upgrading my W500 to Windows 7, the laptop fan stopped working.


Please ensure that all of the Lenovo drivers for Windows 7 have been succesfully installed which includes BIOS updates as well.


You may browse to the eSupport site and download the drivers manually or you may use ThinkVantage System Update to scan your laptop for the needed drivers in order for your laptop to run Windows 7 smoothly.


Once all updates has been applied, use Lenovo Toolbox --> Diagnostics --> System Stress Test to test if all applications are working properly.

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