Screen brightness to dim and unable to adjust using slider and buttons

hey guys ive had my macbook air about a week now and one night the screen decided to turn really dim all of a sudden i assumed this was due to me shutting down however the next day wen i turned it on again the screen was just as dim and when i try to adjust the brightness setting via the slider in prefrences or the f1 and f2 buttons nothing is happening,
have any of you had the same problem if so how did you get it solved
cheers

you have to reopen the display adjustment in the System preferences, and Un-click the Automatically Adjusts Button. I kinda like this feature, but not all do, its an Apple thing, takes a bit of getting used to, saves the eye strain. I have noticed, as I am blind in my right eye, and tunnel vision in my left. that this is really good , and helps me a lot..
Play with the MBA , you'll figure it out..
Have fun
Neil

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