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    Windows 7 Brightness control

    Discussion in 'Sager and Clevo' started by sujinge9, Aug 20, 2009.

  1. sujinge9

    sujinge9 Notebook Evangelist

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    Been using windows 7 rtm without a hitch so far... until now. I discovered that fn buttons to change brightness doesn't work. neither does the brightness control under the power options. Is it a video drivers thing or something?

    Oh a side note, I got 1.5 hours with windows 7 with full brightness which is approx what I got on vista with 40% brightness.
     
    sujinge9, Aug 20, 2009
    #1
  2. scourge18a

    scourge18a Notebook Consultant

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    Try to reinstall your hotkey drivers. Just use the files on your driver disc, don't use the installation program.
    As far as battery life I get 1h50min with win 7 and my brightness 2 clicks down.
     
    scourge18a, Aug 21, 2009
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  3. Dgourd

    Dgourd Notebook Geek

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    When I get a new OS, sometimes drivers are lost so I always install all of them over again myself.
     
    Dgourd, Aug 21, 2009
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  4. sujinge9

    sujinge9 Notebook Evangelist

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    Well its not all a hotkey problem since using the windows 7 power option settings to directly change the brightness also does not work.
     
    sujinge9, Aug 21, 2009
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  5. Win3K

    Win3K Notebook Consultant

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    it should work with the hotkey and video driver installed.
     
    Win3K, Aug 21, 2009
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  6. @nthony

    @nthony Notebook Evangelist

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    Another thing, in services.msc, make sure the PowerBiosServer service is set to run automatically, and in msconfig.exe, you have Hotkey.exe enabled to run at startup.
     
    @nthony, Aug 21, 2009
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  7. Shadows1990

    Shadows1990 Notebook Evangelist

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    I noticed the exact same problem as the OP when I installed any other Nvidia driver that wasn't one of their own Notebook drivers.

    If you aren't already using the Notebook drivers, try those and see if it comes back. If you are, try reinstalling the video driver as well as the Hotkey driver like other suggested.

    edit: This was under Windows 7 RC/RTM X64
     
    Shadows1990, Aug 22, 2009
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  8. Neil McRae

    Neil McRae Notebook Evangelist

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    works ok on the 8882
     
    Neil McRae, Aug 22, 2009
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  9. devilcm3

    devilcm3 Notebook Deity

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    either you are using 190 drivers which is not intended for laptops...
    or your videocard drivers are corrupted...

    i got the same problem as yours , and i revert back to 186.03 and the problem is gone
     
    devilcm3, Aug 22, 2009
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  10. kilobytes

    kilobytes Newbie

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    devilcm3 may be right, I got the same problem, but when I reverted back to 186.56, the problem went away
     
    kilobytes, Aug 22, 2009
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  11. sujinge9

    sujinge9 Notebook Evangelist

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    Ah, ok cool. Thanks. I'll try switching back.
     
    sujinge9, Aug 25, 2009
    #11