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Windows 10 Brightness Slider Not Working: Here Are The Fixes

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By Author: Blanche Harris
Total Articles: 150
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Out of all Windows 10 issues, several users encounter one common problem: Windows 10 brightness control not working on their systems. Due to the weird bug, users cannot increase or reduce their brightness levels on Windows 10 systems. Numerous users are reported that they cannot modify the brightness of the screen from the taskbar or the Notification Center. This is big trouble for Windows 10 users as they would alternatively have to seek brightness settings deep inside the Settings application every time they have to modify the display’s brightness. If you are one of those who face exact trouble, then follow this blog.

Update the Display Adapter Drivers

To update the display adapter drivers, pursue these on-screen steps provided below:

Press the Windows key over the keyboard to invoke the search bar.
Thereafter, input ‘device manager’ in it and hit the Enter key to open the Device Manager.
You should expand the ‘Display Adapters’ option.
Go to the Display Adapter, and right-click on it, then pick the ‘Update Driver Software’ option.
After that, choose the ‘automatically ...
... search for the updated driver software’ option.
Now, reboot the system once it’s updated and validated.

Turn on Adaptive Brightness

To turn on adaptive brightness, pursue these on-screen steps provided below:

Go to the Search panel on your system and input ‘control panel’ in it.
Then press the Enter key to open the Control Panel screen.
You should click on the ‘Power Options’ section.
After that, select the link of ‘Change plan settings’ beside the recent power plan.
Later, select the ‘Change advance power settings’ option.
Jump to the new screen and select the Display option to invoke the listings beneath it.
You have to locate and select every pursuing: ‘Dimmed display brightness,’ ‘Display brightness,’ and Enable adaptive brightness.
Later, modify every of these to the preferred settings.
Now, hit the Apply and OK button to save the changes.
Turn on the PnP Monitor Driver

To turn on the PnP monitor driver, pursue these on-screen steps provided below:

Go to the Windows icon and hit on it to open the Search panel.
Then insert ‘device manager’ in it and press the Enter key.
Once it opens, select the Monitors option.
You should select the ‘Generic PnP monitor’ option and right-click on it to check whether it is turned on.
In case not turned on, select the ‘Enabled device’ option. In case it is turned on, disable it.
Now, hit the tab of Action at the upper menu of the Device Manager.
You should click on the ‘Scan for Hardware Changes’ option.
Finally, launch the scan.
Update the Registry

To update the registry, pursue these on-screen steps provided below:

Go to the Windows icon and click on it.
Once appear the search bar, input ‘RegEdit’ in it and press the Enter key.
Navigate to the ‘HKEY_LOCAL_MACHINE’ command and select the ‘System’ option.
You should reach the ‘ControlSet001’ option and select the ‘Control’ option.
Now, choose the under registry and adjust the ‘FeatureTestControl’ DWORD’s value to 0000ffff: Class{4d36e968-e325-11ce-bfc1-08002be10318}000
Source: https://blanchektechnologyhub.wordpress.com/2021/03/10/windows-10-brightness-slider-not-working-here-are-the-fixes/
Visit: https://sites.google.com/a/sy4norton.com/installnortonsetup/,
https://sites.google.com/a/sy4norton.com/mynortoncomsetup/

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