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Amol_HP1 Student
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Brightness Keys not working

Hp 15-ac 120tx
Microsoft Windows 10 (64-bit)



I have HP 15-ac 120tx laptop with windows 10 whis is i recently brought. On my laptop brightness keys (f2+f3) is working fine for few days, but suddenly its not working. I also try to changed  the brightness from grpahics propertiy but its aslo not working (Apply button is disable). please give me any solution for this.


Thank you.

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HP Recommended

Brightness Keys not working

Hello @Amol_HP1,


Thank you for visiting the HP Forums!


I understand that the brightness keys are not working on your HP 15-ac120tx Notebook. I would like to assist you with resolving this issue.


Have there been any recent Windows updates?

Any new software or hardware installed?


First, please perform a hard reset. Once that is complete follow the steps from this graphics document to resolve the issue:


HP Notebook PCs - Green Screen and Other Video Playback Issues (Windows 10)


I look forward to your reply! If this information is useful, click the thumbs up.

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