The brightness of the display function is not after installing Service Pack 2

Hi, I had installed Service Pack 2 as recommended by the window update (my laptop is HP DV5 series). After installation, my screen resolution has changed and so I put it back to normal. But the strange thing is, I can't change the brightness of the screen by clicking on Fn + F keys that I've always done. The function to change the brightness in the power option is too much missing.

Problem is solved after I restore the window. FN + F keys work, and re-emerged the brightness option in the Option to. The problem is, should I go for the new update that remind me of in the update of the window? Thank you!

Hi all

I suggest that you download and install the latest version of the software of the manufacturing.  Software installation utility your function keys should work again.

Thank you for using answers Forum. Please let us know how it works.

Joseph
Microsoft Answers Support Engineer
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Tags: Windows

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