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Released by Lenovo in 2013, the P400 Touch is a 14” notebook style laptop with touch screen functionality. The model number for the device is 20211.

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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?

por

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

por

Do the fn buttons for brightness not work?

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

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Shut down computer and when lenovo screen comes on immediately press and hold brightness up

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abdurahman salah será eternamente grato(a).
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