Borrow eBooks, audiobooks, and streaming video from your library using OverDrive on your Windows 8/8.1/10 device. More than 30,000 libraries worldwide offer titles from OverDrive, so download the app and find your next book today!. Available 24/7, now the library comes to you. No more late fees. Titles are automatically returned.
Circle with a line through it
Learn what to do if your Mac starts up to a circle with a line through it (prohibitory symbol).
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.
Overdrive App Mac Has Exclamation Point Free
Apple logo
Learn what to do if your Mac starts up to an Apple logo or progress bar.
Globe with alert symbol
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.
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.
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
Overdrive App Mac Has Exclamation Point Word
- 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.