How to Wipe a MacBook

Turn off your MacBook by clicking on the 'Apple' symbol in the upper left corner and selecting 'Shut Down.' If your computer is not plugged in to an outlet, connect it now.
Hold down the 'Power' button as well as the 'Shift,' 'Ctrl' and 'Option' keys all at once, then release them simultaneously.
Press and release the 'Power' button to turn the computer back on. Your MacBook has been restored to the factory default settings.
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