When I turn down the screen brightness, I can't lift it again

I lowered the screen brightness and when I came to raise it I was surprised that it does not rise

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Hi abdurahman salah

What OS did you used? does it happens recently?

had you tried updating the graphic drivers?

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its a problem when it updated to windows10 ... and there aren´t a official graphics drivers update

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Do the fn buttons for brightness not work?

Can you up it by any other means? (settings)

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