2012 macbook pro power cord3/13/2024 Plug the power cable back in, then turn on your Mac.Keep all four buttons pressed down for ten seconds, then let go. Hold the left Shift+Control+Option keys down, then press and hold the power button down.Unplug the power, then shut down your Mac.On Mac computers that play a startup sound, you can release the keys after the second startup sound.Īmazingly, how do I reset the SMC on my MacBook Pro? You can release the keys after about 20 seconds, during which your Mac might appear to restart. Subsequently, how do you reset the PRAM on a 2012 MacBook Pro? Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R.
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