Circle with a line through it
![Lock screen for macbook pro Lock screen for macbook pro](/uploads/1/1/9/3/119320192/441261684.png)
Learn what to do if your Mac starts up to a circle with a line through it (prohibitory symbol).
Make sure you’re completely ok with this and select Turn Off Screen Lock. Once this is done, you won’t have to enter your password every time you wake your Mac after it went to sleep or after the screen saver was activated. The solution: make the system lock the screen using your login items! I checked, and can't find an AppleScript command to lock the screen, so I instead dragged the ScreenSaverEngine.app in /System - Library - Frameworks - ScreenSaver.framework - Versions - A.
Question mark
Learn what to do if your Mac starts up to a question mark.
Blank (empty) screen
Learn what to do if your Mac starts up to a blank screen.
Apple logo
Learn what to do if your Mac starts up to an Apple logo or progress bar.
Globe with alert symbol
Change Mac Lock Screen
A globe with an exclamation point means that your Mac tried to start up from macOS Recovery over the Internet, but couldn't. Learn what to do if your Mac can't start up from macOS Recovery.
![Screen Lock For Mac Screen Lock For Mac](/uploads/1/1/9/3/119320192/357268091.jpg)
Lock icon
If your Mac is using a firmware password, the lock icon appears when you try to start up from another disk or volume, such as an external drive or macOS Recovery. Enter the firmware password to continue.
How To Lock Screen On Macbook Pro
System lock PIN code
Your Mac asks for a PIN code when it has been remotely locked using Find My. Enter the four-digit or six-digit passcode to continue.
Login window
At the login window, enter your user account password to log in to your Mac. If FileVault is turned on, this also unlocks your disk. You might see a default desktop picture in the background, which might change to your chosen desktop picture when you select your account.
Thunderbolt, USB, or FireWire symbol
A large Thunderbolt , USB , or FireWire symbol against a dark background means that your Mac is in target disk mode.
Learn more
Mac Lock Screen Shortcut
- Learn what to do if your Mac displays a message that it restarted because of a problem.
- Learn what do do if your Mac continuously restarts.
- When starting up from Windows using Boot Camp, your Mac doesn't show an Apple logo or the other macOS screens in this article.