I can not change the brightness at all

[plavaazra]

Hi, 

I have a problem with changing my brightness. If I try to move the chart for changing the brightness it can and I see that I for example moved the brightness from 80% to 20% but it does not change. I got this laptop from a family friend and it was used in a firm and a lot of changes that I want to do in settings I can not. So please help me!!

Kind regards

[zoey7886]

@plavaazra, Welcome to the HP Support Community! We're stoked to have you on board! 

To help us get started on resolving your issue, could you please share your HP unit's serial number or product number with us via private message? 

Need help finding your product number? We've got you covered! Check out this handy guide:  
https://support.hp.com/in-en/document/ish_2039298-1862169-16 

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We're looking forward to helping you get back up and running! 

Regards,