If your Mac doesn't start up all the way
If your Mac doesn't start up all the way or needs you to do something during startup, it may stop at one of these screens.
Question mark
Find out what to do if your Mac starts up to a question mark.
Circle with a line through it
Find out what to do if your Mac starts up to a circle with a line through it (prohibitory symbol).
Globe with warning symbol
A globe with a warning symbol (exclamation mark) means that your Mac tried to start up from macOS Recovery over the internet, but couldn't. Find out what to do if you can't start up from macOS Recovery.
Apple logo
Find out what to do if your Mac starts up to an Apple logo or progress bar.
Blank (empty) screen
Find out what to do if your Mac starts up to a blank screen, such as an empty grey, black or blue screen.
Options with a gear icon
Find out what to do if your Mac starts up to Options with a gear icon, also known as startup options.
Exclamation mark in a circle
Find out what to do if your Mac starts up to an exclamation mark in a circle.
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.
Login window
At the login window, enter your user account password to log in to your Mac. If FileVault is turned on, this will also unlock your disk. You may see a default desktop picture in the background, which may change to your chosen desktop picture when you select your account.
The login window only appears after you log out of your user account (Apple menu > Log Out) or restart or start up your Mac. If you're still logged in to your user account, you might see your lock screen instead. Your lock screen looks similar and uses the same login password, but doesn't provide password-reset options.
Find out what to do if you’ve forgotten your login password.
Activation Lock or system lock PIN code
If your previously owned Mac shows an Activation Lock window that asks for someone else's Apple Account, the previous owner may need to remove Activation Lock for you. Find out more about Activation Lock on Mac.
Your Mac might ask for a PIN code when it has been remotely locked using Find My because the owner thinks the Mac is lost or stolen. Enter the four-digit or six-digit passcode to continue.
Thunderbolt, USB or FireWire symbol
A large Thunderbolt target disk mode.
, USB or FireWire symbol against a dark background means that your Mac is in