Must be the power issue

Hi all

I have HP Probook s 4540 with windows 8, 1 year, now I am facing a problem.

When I load my laptop its brightness increased and when I disconnect a wire load luminosity decreases but is not a problem.

the problem is that yesterday when I charge my laptop its not increasing brightness not I google it on a problem, and then my friend said that update your BIOS in order to update my BIOS and then my splinter cell has increased but when I unplug charger its brightness does not diminish and for your kind info brightness adjustment does not ever thought shortcut key FN + F2 or F3.

and battery HP support assistant software option shows AC but I unplug my charger.

Sorry for my English.

Kind regards

Ch. Muhammad Osama

just found a solution

I download and install it, and now I can change my brightness of laptop.

http://download.CNET.com/desktop-lighter/3000-2108_4-10822614.html

Tags: Notebooks

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