Instructions

1

Click the "Apple" menu, select "System Preferences" and click "Displays."
2

Click the "Display" tab.
3

Scroll down to the bottom of the "Resolutions" menu. Click the bottom-most resolution, which is the maximum resolution for your MacBook. The resolution will reset immediately.
4

Click the "System Preferences" menu at the top of the screen and select "Quit System Preferences."