Solved Windows 8 laptop screen brightness cannot be changed

February 7, 2014 at 05:46:14
Specs: Windows 8, intel i3, 4GB
I have Toshiba satellite L850-i2011 with newly installed windows 8 OS.
The display brightness can not be changed , though I can move brightness slider up and down.
The brightness adjusts itself when I move from one file to another.
It seems display is making some changes in brightness , but there is a lag during that process.
So it is not comfortable .
Help me to solve this problem.
Thank you

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February 7, 2014 at 11:05:24
Usually caused by the graphics driver version. Reverting to an older version if available usually cures that problem. In some cases, simply re-installing existing version fixes it too.

Have a look at available graphics drivers for your model on the appropriate Toshiba website for your country:

European countries:


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February 7, 2014 at 17:22:21
Try Fn + F3

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February 11, 2014 at 16:59:50
✔ Best Answer
Sometimes, laptops will change the brightness based on whether it is plugged in or not. Check to make sure your charging cable is not half-in or loose. You should be able to adjust this setting in the Power Options.

Control Panel > System > Power Options and just set the brightness for both 'plugged in' and 'not plugged in' to the same.

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