MBP Brightness won't adjust

Hi I have a MacBook Pro that won't get brighter. I can try with the Ctrl+F2 or in the System Preferences, but neither way make it brighter. In System Preferences, I can move the slider up and down, but still, nothing.
Any help would be appreciated. THANKS!

Hello @Alacare ,
Welcome to the HP Forums!
I understand the brightness shortcut on your notebook is no longer working.
It would help to know which product and operating system you are using. For information on finding your product and model numbers click here: How Do I Find My Model Number or Product Number? To see which version of Windows you are using click here: Which Windows operating system am I running?
If this issue is new the easiest solution would be to do a system restore to before the issue started. You can access the system restore by tapping F11 while the notebook turns on.
Please let me know if that works, or reply with the notebook model and operating system.
I look forward to your reply!
Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

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    Welcome to the HP Forums!
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    Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
    Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
    The Great Deku Tree
    I work on behalf of HP.

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