Windows 11 Brightness Slider has no effect on actual brightness

tomaszmaciejewski 0 Reputation points

Why is my Windows brightness slider is adjusted, but has no proper effect on actual brightness? No matter how you adjust the slide, brightness is always at max, only decreases (dims) between 40 and 55.

When I go to the vod website and turn on the movie, the brightness becomes maximum.

I have tested every possible Intel HD graphics driver version out there and checked it in three different OS; Windows 7, 10 and Ubuntu. Shows the same symptoms in each.

Might it be the bios, graphics driver or the hardware issue?

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
10,522 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
8,055 questions
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  1. Ian Xue (Shanghai Wicresoft Co., Ltd.) 29,311 Reputation points Microsoft Vendor

    Hi tomaszmaciejewski,

    Please open Windows PowerShell and run

    (Get-WmiObject -Namespace root/WMI -ClassName WmiMonitorBrightnessMethods).WmiSetBrightness(0,80)

    This command sets the brightness to 80. If this does not work, it could be a driver issue or hardware issue and you can check for the latest driver with the manufacturer. Otherwise you can try these commands to fix the issue.

    sfc /scannonw
    Dism /Online /Cleanup-Image /ScanHealth 
    Dism /Online /Cleanup-Image /RestoreHealth

    Best Regards,

    Ian Xue

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