unable to adjust display brightness

[Gurjot_Singh1]

few days ago i updated drivers and after that brightness level adjust option stopped working. after that i have tried many times to update drivers again and again and i have reset my computer but still problem did not solved.

[Max3Aj]

@Gurjot_Singh1, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
I understand you're having trouble adjusting the display brightness on your HP ENVY x360 - 15-cn0003ca after a recent driver update on Windows 11.
It sounds like a display driver issue, even after resetting your computer. Sometimes a generic Windows driver can be installed, or the updated driver might be corrupted.

Let's try a few steps to diagnose and resolve this:
 

Check Brightness in BIOS

• Restart your laptop.
• Press Esc, then F10 to enter BIOS.
• If the screen is still dim in BIOS, it may indicate a hardware issue (e.g., backlight failure).

Reinstall Display Drivers

• Press Win + X → Select Device Manager.
• Expand Display adapters.
• Right-click your graphics driver (e.g., Intel UHD or AMD Radeon) → Select Uninstall device.
• Restart your laptop. Windows will reinstall the driver automatically.
• Alternatively, download the latest drivers from the HP Drivers & Software page for your model.

Disable Adaptive Brightness

• Go to Settings → System → Display.
• Turn off “Change brightness automatically when lighting changes”.
• Also go to Control Panel → Power Options → Change plan settings → Change advanced power settings.
• Expand Display → Set Enable adaptive brightness to Off for both battery and plugged in.

Use Windows Mobility Center

• Press Win + X → Select Mobility Center.
• Try adjusting brightness from there.

Perform a Hard Reset

• Shut down the laptop.
• Unplug the charger and remove the battery (if removable).
• Hold the power button for 15–20 seconds.
• Reconnect everything and power it on.

Test with an External Monitor

• Connect your laptop to an external display.
• If the external screen is bright, your laptop screen/backlight may be faulty. 

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support