Windows 8 and 8.1 Forums

Sony VAIO on Windows 8 can't change brightness

  1. #1

    Posts : 1
    Windows 8 Pro

    Sony VAIO on Windows 8 can't change brightness

    I have a Sony VAIO VPCS11X9E and my screen brightness is at the lowest setting for some reason. Also, my FN keys for the brightness setting won't work. Any means of changing the brightness does not work, this does include the brightness bar when you go into settings.

    I have tried so many driver installs, checked for any missing drivers or out of date drivers, but the only one that seems out of date is my Intel HD graphics which I HAVE updated, yet the Intel driver update checker says otherwise.

    I have disabled AND enabled (just in case) the adaptive brightness, but it does NOT work.

    I did have Windows 7 Ultimate running on before but decided to upgrade to Windows 8. Windows 7 never had any issues with brightness. Also when I load up, even thought I have replaced Windows 7 with Windows 8, it still loads up the dual boot screen asking me which OS I want to boot with. Booting with Windows 7 will blackout a few times then it will take me to the VAIO repair system. Windows 8 obviously takes me to Windows 8.

    When the laptop boots up, the large letters or 'VAIO' are bright and normal and sometimes, but not always, when it gets to the dual boot screen, the brightness is normal. However, when this does happen, as soon as I move the mouse or click a button, the brightness immediately goes back down to very dim.

    When it loads up into any other system or boot program the brightness is fine. For example when I go into Sony VAIO's recovery center, the brightness is ok. Also, if I boot into something like miniXP or a separate OS on a bootable disk or USB, the brightness is fine as well.

    I have tried many driver fixes, but NONE of them work!! I have tried booting up into safe mode and trying to manually install certain drivers because that apparently works, but it does not make any difference at all.

    If you could help me , even if it doesn't work, I would greatly appreciate it!!
    Many thanks.

      My System SpecsSystem Spec

  2. #2

    Posts : 1
    Windows 8.1

    Registered here just to give you the answer:

    Change the FeatureTestControl value located in:

    HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000 (OR 0001)

    to hexadecimal fb20

    Worked for me with exactly the same machine as you. Good luck!
      My System SpecsSystem Spec

Sony VAIO on Windows 8 can't change brightness

Similar Threads
Thread Forum
Sony Vaio laptop not booting up(Windows 8/8.1)
Hi, I have a Sony Vaio Laptop (Model SVE14A3C5E) with Windows 8/8.1 pre-installed. My laptop froze when doing a restart so I manually shut it down holding the power button(It froze on the screen saying 'Stopping Services'). When turning it back on it started to do an Automatic Repair but after...
General Support
BSOD Windows 8.1 on Sony VAIO SVT141C11U
Hi all, I would like to help me with my problem, in recent days been suffering a series of BSOD on my Notebook Sony, after the reinstallation I did it started. 54188
BSOD Crashes and Debugging
Sony Vaio windows 8 install help
I have a sony vaio sve14a35cxh that I'm trying to install back to windows 8 as it was originally pre-installed with. I have the boot mode set to legacy now when it asks where I want to install windows, theres a message saying "Windows cannot be installed to this disk. This computer's...
Installation & Setup
Where is Windows 8 Licence key in Sony Vaio Laptop?
Hello, I buyed a sony laptop from a shopping. First Question: before it ... can i sure that my sony laptop is new notebook or refurbished laptop ? Two Question: Windows original in my laptop is Windows 8 ... can i install windows manually? where is licence? ( I saw under laptop beside...
Installation & Setup
sony Vaio windows 8 a Sony Vaio windows 8....and noticed it has only C in case i qould like to format the laptop in the future,all data inserted would be eraSED,as it will format all Data there any way to open a new DATA D DISC?
General Support
Sony VAIO brightness control issue on Windows 8
Hello guy. I have a little issue with me Sony VAIO laptop after installing Windows 8. In fact I did not have this issue when i installed it 1st time, (meaning I was running Windows 8 previously on this machine without this issue). The Issue: I can not control the brightness level by it's...
General Support
Sony Vaio E Series Brightness Not Changing
Hey guys, I've only recently noticed this, but the brightness on my Vaio is stuck. FN+F5/6 does nothing at all. Changing the slider on both Win+C - Settings - Brightness and also through the Control Panel display options both do nothing either. Any suggestions how to get around this? ...
Performance & Maintenance

Eight Forums Android App Eight Forums IOS App Follow us on Facebook