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I know that might be an easy solution, but neither my functional keys(Brightness UP and Brightness DOWN) are working, nor my system show brightness slider in display preferences ...

I have successfully installed OSX Yosemite on my Probook 4530s, at beginning the display brightness was fine but after running ProBook installer the display dims on startup... I guess i have installed some extra feature either through Probook Installer or Multibeast. Help me here guys how can...

Hi... I installed OSX Yosemite on my Probook-4530s successfully, but after running HP-Installer, my TrackPad and Laptop-Keyboard stopped working... Guess i have selected some wrong options while running HP-Installer.. So is there any way i can uninstall the kext files that are causing the...