Fix Can’t Adjust Brightness on Windows 10

If you haven’t updated your Windows 10 for a long time, then you might be facing errors. Because when your OS is outdated, then it has the right to respond laggy. Also, when you start facing difficulty in adjusting brightness, then your device’s drivers might also need an update. Well, there are several workarounds to Fix Can’t Adjust Brightness on Windows 10. Allow me to start with this article with the most appropriate method.


4 Ways to Fix Can’t Adjust Brightness on Windows 10

Update Display Drivers

Fix Can't Adjust Brightness on Windows 10

  • Press Windows + X key and select Device Manager
  • Locate Display adapters
  • Right-click on an installed adapter and select Update driver
  • On the next window, click on Search automatically for updated driver software
  • Let it install the driver and reboot after the process is completed.

Customize Adaptive Display

Brightness won’t change on Windows 10

  • Launch Control Panel through the Cortana search bar.
  • Navigate to Hardware and Sound > Power Options
  • Click on Change plan settings
  • Now hit Change advanced power settings
  • On the new window, locate and expand Display
  • Customize the Turn off display after as you desire.
  • Afterward, click on Apply and then on Ok.

Upgrade Windows Registry

Fix Can't Adjust Brightness on Windows 10

  • Press Windows + R button.
  • Type Regedit in the box and press enter.
  • Navigate to the following path:
    • Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control
  • Expand Class and select {4d36e968-e325-11ce-bfc1-08002be10318}
  • At last, select 0000
  • From the right-side panel, double-click on FeatureScore
  • Change its DWORD value to 0000ffff
  • Restart your PC.

Turn-on PnP Monitor

Brightness won’t change on Windows 10

  • Press Windows + S button.
  • Type Device and select Device Manager
  • Locate and expand Monitors
  • If the Generic PnP Monitor is enabled, disable it.
  • After disabling it, navigate to Action that’s available in the menu bar.
  • Click on Scan for hardware changes, but after selecting the Generic PnP Monitor
  • Let your computer run the process in peace.
  • If your computer tells you about a problem, allow it to fix the issue.
  • If not, then enable Generic PnP Monitor again.

That’s all, keep visiting WindowsBoy for more.

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