hp laptop brightness not working

[hebitants]

I have tried everything to get my brightness to work on my laptop. i have tried to find hotkey drivers for it everywhere but nothing is working. i have reinstalled windows, updated all of my drivers, opened up the laptop and unplugged and replugged the display and like 6 other things. it worked yesterday but not now. i cant change it in windows either. it says in the "battery" tab "your screen is using more battery then useal because the brightness is so high" but i cant change it?? help asap please.

[Raj_05]

Hi @hebitants,

Welcome to HP Support Community.

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

It sounds like you've done quite a bit of troubleshooting already. Let's try a few additional steps to resolve the issue with the brightness control on your HP laptop.

Step-by-Step Troubleshooting

Update Graphics Drivers:

• Go to the Device Manager.
• Expand the "Display adapters" section.
• Right-click your graphics driver and select "Update driver."
• Choose "Search automatically for updated driver software."

Reinstall Graphics Drivers:

• Uninstall the current graphics driver.
• Go to the manufacturer's website (Intel, NVIDIA, AMD) and download the latest driver for your specific GPU model.
• Install the downloaded driver and restart your laptop.

Check Power Settings:

• Go to Settings > System > Power & sleep > Additional power settings.
• Select your active power plan and click "Change plan settings."
• Click "Change advanced power settings."
• Expand "Display" and then "Enable adaptive brightness," and make sure it is turned off for both "On battery" and "Plugged in."

Check Windows Update:

• Go to Settings > Update & Security > Windows Update.
• Check for updates and install any that are available.

BIOS/UEFI Update:

• Go to the HP Support website.
• Search for your specific laptop model.
• Download and install the latest BIOS/UEFI update if available.

[Raj_05]

Hotkey Driver Installation:

• Some HP laptops require specific hotkey drivers to control brightness.
• Go to the HP Support website and look for any hotkey driver or utility specific to your laptop model.
• Download and install it, then restart your laptop.

Registry Edit:

• Press Win + R, type regedit, and press Enter to open the Registry Editor.
• Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\DCI.
• If there is a value named Timeout, set it to 0. If not, create a new DWORD (32-bit) Value named Timeout and set its value to 0.
• Restart your laptop.

Resetting Power Plans:

• Open Command Prompt as an administrator.
• Type powercfg -restoredefaultschemes and press Enter.
• Restart your laptop.

Advanced Steps

If the above steps do not resolve the issue, you may want to try the following:

Check for Third-Party Software:

• Uninstall any third-party software that could interfere with display settings, such as screen dimming utilities or power management tools.

Hardware Diagnostics:

• Run HP's built-in hardware diagnostics to check if there's a hardware issue with your display.
• You can access this by restarting your laptop and pressing F2 repeatedly to enter the diagnostics menu.

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. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Alden4

HP Support 

[Davii_]

Thank you for these steps! My brightness had been dark for the longest and It'd been driving me crazy. I just reinstalled the Graphics Drivers and as soon as it started downloading the brightness changed and the buttons for the brightness are working again. Thank you!