Brightness button not working mac

My Macbook Pro"s volume, screen brightness, and also keyboard brightness keys carry out not work-related. The F3 and F4 keys perform work yet. I"ve review that periodically you need to push the Fn vital along with the volume/brightness keys or readjust the settings in System Precommendations. Holding the Fn essential along with the volume/brightness secrets does nothing and also whenever I go to Keyboard under System Precommendations, it freezes and I need to pressure quit. I don"t think it"s any kind of physical damage, bereason every one of my other tricks work-related perfectly. What have to I do?
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Buzzard2010
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JoinedOct 22, 2010Messages2,571Reaction score79Points48LocationBretforton, WorcestershireYour Mac"s SpecsMacBook Pro 15" 2014, 2.2GHz i7, 16GB RAM, 250GB SSD, OSX 10.9.5 - iPhone 5s 16gb
Try booting your MBP from the OSX install disk. When in there, pick utilities from the optimal food selection then select Disk Utility, when in Disk Utility click on your HDD then pick repair disk, once this has actually completed then click repair perobjectives. This might fix the trouble.If not I would certainly recommfinish backing up your MBP and doing a fresh install.Hope this helps- Simon
Exactly the very same problem here (MBPro OSX 10.6.6). Tried the Disk Utilities discovered rebooting via the Install DVD however nopoint happens... I"m about to go back with Time Machine, I"ll tell you the outcomes.

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Equipment to Fix Volume Keys not WorkingTry going to your device choices. Go to "keyboard" and make sure the switch at the top is clicked on "keyboard" not key-board shortcuts. Then uninspect package that claims "use the feature secrets as traditional feature tricks.I had the exact same difficulty via my friend"s macbook pro.
Try going to your mechanism preferences. Go to "keyboard" and make certain the switch at the peak is clicked on "keyboard" not key-board shortcuts. Then unexamine the box that claims "usage the attribute keys as typical function secrets.I had actually the same trouble via my friend"s macbook pro.
Try going to your mechanism choices. Go to "keyboard" and make sure the switch at the height is clicked on "keyboard" not keyboard shortcuts. Then uninspect package that claims "use the function secrets as typical attribute tricks.I had the same difficulty through my friend"s macbook pro.

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Try going to your system preferences. Go to "keyboard" and also make sure the switch at the height is clicked on "keyboard" not key-board shortcuts. Then uncheck package that claims "usage the feature keys as typical function keys.I had actually the same trouble via my friend"s macbook pro.
I"m having actually the very same worry, and also unchecking the box to usage Fn keys as conventional secrets didn"t resolve the difficulty for me.

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