WOW!!! thanks!!!!!!!!!!!!!!!
ALSO, you should change :
Select Power Plan>Balanced>Change advanced power settings>Display> Display Brigtness> [on battery] 100% .............or whatever you want
Sony VAIO laptop upgrade to Windows 8.1 brightness problem SOLVED!!!
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Anonymous
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What really solved the problem is that the NVIDIA graphics was outdated.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
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
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Anonymous
2015-12-03T09:54:51+00:00 -
Anonymous
2016-07-14T10:03:13+00:00 I have a Sony Pro13.
With the upgrade to Windows 8.1, I can't even use the Fn F5/F6 to adjust the brightness anymore. And the screen flicker is even worse than before!
Have been trying to do system restore to Windows 8 but to no avail.
Who can help pls?
i have also this peroblems