After it shuts down, press the Shift, Control, and Option keys along with the on/off button at the same time.Earlier MacBooks without a removable battery Hold down the on/off button for about 5 seconds.ģ. insert small folded paper or old credit card cutting as plastic swag/cuff. Loosen the 4 screws mounting the RAM holder slot a bit. Press and hold the power button so the fan goes off. Earlier MacBooks with a removable battery If any of your RAM goes undetected, also the chime doesnt happen and the only sound is of 3 concorrunt beeps then: 1.
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