Sony VAIO laptop upgrade to Windows 8.1 brightness problem SOLVED!!!

Anonymous
2013-10-22T16:48:25+00:00

Just sharing the solution to this.  Recently I have been searching all posts, forums, and questions/answers on the net.  But I have not been able to solve the problem of screen brightness adjustability on my VAIO laptop.  Some minutes ago, I updated all my drivers (Intel) on the official sony website, which is available to all sony users.  The problem still persisted.

What really solved the problem is that the NVIDIA graphics was outdated.  I have a GT740M, and updated it to 8.11.18.1146 and rebooted.  The update is available in VAIO Update (desktop).  Now my screen brightness can be adjusted, as I normally did, with the Fn Key!

Hope this helps other VAIO users.  Good Luck!

Windows for home | Previous Windows versions | Devices and drivers

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  1. Anonymous
    2013-11-06T15:55:32+00:00

    Unfortunately this happend after i did all the official updates. As for graphics driver, i've always downloaded from VAIO rather than AMD, because of the heavy customization Sony did to the hardware, it usally only works if is their own driver.

    I can understand your problem, but have you tried to search for newer updates after that, or tried re-installing them? Additionally, you may also try to repair and run some setups available in the Vaio Care (desktop mode), it might help.

    Maybe it would also be wise (if really urgent) to restore your system to an earlier point, so as to omit those updates.  But be sure to back up all your important files.

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  2. Anonymous
    2013-11-06T07:31:43+00:00

    Unfortunately this happend after i did all the official updates. As for graphics driver, i've always downloaded from VAIO rather than AMD, because of the heavy customization Sony did to the hardware, it usally only works if is their own driver.

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  3. Anonymous
    2013-11-05T17:30:07+00:00

    Firstly (and most importantly) : update everything you can...   Install all windows updates and then go to VAIO update and install all updates available, there are always some minor updates available in the control center that might fix your problem even it might not seem to be!

    Secondly : depending on your country/region of purchase of your laptop, check the online support website for messages and software updates.  These updates might be available ONLY in the official website and not through Vaio update software.

    Trying to fix system settings are not likely to help at all, I tried many many ways and finally for me, the NVIDIA driver seemed to be the source of the problem (it was outdated).  It might be another problem for you, and there is no need to change your power settings - they work best when allowed to operate in default mode.

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  4. Anonymous
    2013-11-05T15:49:25+00:00

    Actually the second method failed, i disabled them both now. It works for me without the auto brightness. I guess you guys have to turn it off in the Vaio Control Centre.

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  5. Anonymous
    2013-11-05T09:42:33+00:00

    Did this work?  have the same problem, and this doesn't fix it for me.  my GF is getting mad sic I use the vaio in bed.

    Nah, didn't work... worked for a while but restarted and back to square one.

    Even went in and disabled the auto brightness through WINDOWS KEY+R>services.msc>Sensor Monitoring Services>Disable and it STILL won't stay dim.

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