MacBook Air Fails To Sleep? Use SMC Reset! [Tip]

A lot of Mac users have the tendency to of immediately putting their MacBook Air to sleep by shutting the lid, since it is easiest method when you are on the go. Normally this would work without any trouble.However, sometimes  the MacBook Air may not sleep when its lid is shut. As the MacBook Air has no moving hard drive or sleep light, it may not come to your notice immediately and you may feel that Mac is sleeping when actually its not. And you may loose on the valuable battery by the time you realize. If this continues to happen more often then, the solution is simple and quick.You just need to reset the System Management controller (SMC):

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