Here are some easy instructions on how to restore your MacBook to factory default.
- Recovery Mode
Restart your MacBook and hold down the COMMAND and R key together at once until the Recovery Mode Windows appears.
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- Disk Utility
Click on “DISK UTILITY” and Select CONTINUE Button at the right bottom
- Erase All The Data
Select your Macintosh hard drive on the left sidebar and Click on ERASE to delete all the data from your macbook. The name of the hard drive might be different, if it had been changed.
- Reinstall The MAC OS X Operating System
Now your macbook is clean and there is nothing left. Before reinstalling the OS X operating system, you have to make sure that your mac is connected to internet because your macbook downloads the OS X operating system. Restart your macbook to reinstall MAC OS X operating system and Select “Reinstall OS X” and Click on Continue Button