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    SZ440 obsessively underclocking the C2D T7200

    Discussion in 'VAIO / Sony' started by gusk4x4, Dec 4, 2008.

  1. gusk4x4

    gusk4x4 Notebook Enthusiast

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    Hello everybody,

    I have a Vaio VGN-SZ440 that obsessively underclocks the processor C2D T7200.
    I checked the temperatures and they are around 55 degrees Celcius (considered pretty normal), and I don't use the Power Management profile (either Maximum Performance, or Power Management Off).

    After using the computer for a while, I can see through Vista Performance Monitor that the maximum CPU frequency goes from 100% to 89%, 66%, 50%, 33%, 19%, and so on until it is unusable.

    Of course Sony Support has been unable to provide any kind of support, and I am living in France where the U.S. warranty is not valid. They don't even have a support center here, only in Belgium.

    I wonder if any of you have already experience this kind of problem and might come with ideas.

    Thank you very much!!
     
    gusk4x4, Dec 4, 2008
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  2. gusk4x4

    gusk4x4 Notebook Enthusiast

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    I found the solution!!

    Vista [Start] -> Power Options -> Change plan settings -> Change advanced power settings
    [tab] Vaio Power Management -> [click] Advanced -> [uncheck] Enable Vaio Power Management -> *restart

    I had this set for 6 months and my computer worked normally again!!
    Last week I reactivated the Vaio Power management and the whole nightmare came back, then I rolled back, so now I am sure about the procedure.
     
    gusk4x4, Mar 23, 2009
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