Cant adjust brightness through F2 and F3

Hi i cant adjust brightness through F2 and F3 buttoms it show no increase or decrease i have hp notebook pavillion dv6 6000 with amd radeon HD 6650 and amd phenom processor operatting system windows 7(64) kindly for any  help with regards

Hi @Hayder-Hikmet ,
Thank you for visiting the HP Support Forums and Welcome. I have looked into your issue about your HP Pavilion dv6 6600 Notebook and brightness controls not working correctly. You could try in the Control Panel, Clock, Language and Region, Language click Advanced Settings in the left pane.Then in Advanced settings, click Change Language bar hot keys. In Text Services and Input Languages, click Change Key Sequence button and enable the the key sequence.
Here is a link to uninstall the keyboard. Restart the computer after uninstalling, it should reinstall automatically. Make sure you remove the USB keyboard first.
Let me know how this goes.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

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