Windows 10: Why is the Brightness slider greyed out in Windows 11?

Why is the Brightness slider greyed out in Windows 11?

:)

 

Windows 10 brightness slider?

not only 25% step is a problem. As in Windows 8.1 i need a slider to reduce brightness in my surface 3. It was very helpful when i take tablet at night after day use with 50% brightness. Now i must break my eyes when switching 50% to 75 then to 100. Please
make back brightness slider (

 

Brightness slider

I have followed many threads to try and get a brightness slider to no avail. Also tried an add on but couldn't get that to work either. Is it possible to add a brightness slider? Windows 10 Pro ver 21H1

 

Windows 11 is changing my screen brightness while I am actively using Apps

Could you confirm if HDR is enabled on your system? If not, To enable HDR and Auto HDR in Windows 11, please follow these steps:

1. Enable HDR in Windows 11:
   
   • Navigate to Settings > System > Display.
     
   • Toggle on "Use HDR" under the "HDR" section.
     
2. Enable Auto HDR:
   
   • Within the same Display settings, toggle on "Use Auto HDR".
     

Once HDR and Auto HDR are enabled, you'll notice the "SDR content brightness" slider under the HDR settings. Now, proceed to adjust the SDR content brightness slider:

1. Adjust the SDR Content Brightness Slider:
   
   • The SDR content brightness slider regulates the brightness of non-HDR content, such as the desktop and file explorer, when HDR is enabled. This adjustment may potentially resolve the issue you're facing.
     

If the issue persists after these adjustments, you may consider the following troubleshooting steps:

• Connect a different monitor to your PC to determine if the issue lies with your monitor or your PC.
  
• Alternatively, if you're experiencing significant difficulties, reverting to Windows 10 could be an option to explore.
  

Please let me know if you require any further assistance or clarification.