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I just did a fresh Windows Vista install on my Sony Vaio VGN-AR71J and all the drivers are there, but the control for the brightness adjustment is gone.

When I tried to run the Vaio Power Management application, Windows shows an error, "SPM module has stopped working".

The computer is working ok, but I am unable to control the brightness.

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1 Answer 1

Sony Vaio drivers has dependency with together, you should read the description of each driver in Sony support web site and install them respectively.

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