night light is not working

[prabhat54]

display night light is not working and setting is not work properly 

[VikramTheGreat]

Hi @prabhat54,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

If the Night Light feature in Windows 11 on your HP PC is not working properly, here’s how   you can try resolving it:

1. Check Display Driver Compatibility

Night Light relies on your graphics driver. If it’s outdated or incompatible, the feature may not work.

• Open Device Manager > Display adapters.
• Right-click your graphics card (Intel, AMD, or NVIDIA) > Update driver.
• Or use HP Support Assistant to automatically update drivers: 👉 HP Support Assistant | HP® Support

2. Enable Night Light Manually

• Go to Settings > System > Display.
• Scroll to Brightness & color.
• Toggle Night Light to On.
• Click Night Light settings to adjust strength or schedule.

If the toggle is greyed out or doesn’t respond, proceed to the next step.

3. Reset Night Light via Registry (Advanced)

⚠️ Only do this if you're comfortable editing the registry.

1. Press Win + R, type regedit, and press Enter.
2. Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount
3. Delete the folder named: $$windows.data.bluelightreduction.bluelightreductionstate
4. Restart your PC and try enabling Night Light again.

4. Check for Windows Updates

• Go to Settings > Windows Update.
• Install all available updates, especially optional updates under Advanced Options.

5. BIOS and Firmware Update

Some HP models require BIOS updates to fully support display features: 👉 HP Notebook and All-in-One PCs - Troubleshooting screen issues (Windows 11, 10) | HP® Support

Use HP Support Assistant or visit your model’s support page to check for BIOS updates.

I hope this helps.

Take care and have an amazing day!
 

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Regards,

VikramTheGreat