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how come the i put the power cable on, the macbook air screen goes black and the external screen still working probably? I am not sure am I press the wrong button cause both screens cannot work together

how come the i put the power cable on, the macbook air screen goes black and the external screen still working probably? I am not sure am I press the wrong button cause both screens cannot work together

MacBook Air

Posted on May 2, 2016 6:07 PM

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how come the i put the power cable on, the macbook air screen goes black and the external screen still working probably? I am not sure am I press the wrong button cause both screens cannot work together

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