Power issues - Your iMac may not receive enough power to run, making it impossible to access your data.External devices - Faulty external devices like hard drives can affect your computer's performance, causing your iMac with no display.Firmware issues - If your firmware suddenly malfunctions, it won't be able to make your computer run properly.Software malfunctions - Operating system errors, outdated macOS versions, data corruption, and other software issues may cause your iMac screen to keep going black.Numerous reasons may lead to the iMac black screen, including: Unexpected black screen - The black screen may also suddenly appear while you use your iMac computer.Ĭommon Causes of an iMac Screen That Goes Black. However, when you click your mouse, the cursor doesn't interact with anything. Black screen with a cursor - You may also see a black screen with only a cursor on it.No display - When you power on your computer, the screen becomes black, with no Apple logo at startup.You can't open applications or enter settings your computer will act like you've turned it off, but it will still have power.Ī black screen can manifest in several ways, such as: IMac black screen is a problem where your screen won't turn on, and you can't see anything on your computer. What Is an iMac Black Screen of Death, and How Does It Manifest? Reset the System Management Controller (SMC).Thunderbolt, USB or FireWire symbolĪ large Thunderbolt, USB or FireWire symbol against a dark background means that your Mac is in target disk mode.8 Ways to Fix the iMac Black Screen of Death Find out more about Activation Lock on Mac. If your previously owned Mac displays an Activation Lock window asking for someone else's Apple ID, the previous owner may need to remove Activation Lock for you. Find out what to do if you’ve forgotten your login password. You may see a default desktop picture in the background, which may change to your chosen desktop picture when you select your account. If FileVault is turned on, this will also unlock your disk. Login windowĪt the login window, enter your user account password to log in to your Mac. Enter the four-digit or six-digit passcode to continue. Your Mac asks for a PIN code when it has been remotely locked using Find My because the owner thinks the Mac is lost or stolen. 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. Exclamation mark in a circleįind out what to do if your Mac starts up to an exclamation mark in a circle. Options with a gear iconįind out what to do if your Mac starts up to Options with a gear icon, also known as startup options. Blank (empty) screenįind out what to do if your Mac starts up to a blank screen, such as an empty grey, black or blue screen. Apple logoįind out what to do if your Mac starts up to an Apple logo or progress bar. Find out what to do if your Mac can't start up from macOS Recovery. Globe with warning symbolĪ globe with a warning symbol (exclamation mark) means that your Mac tried to start up from macOS Recovery over the internet, but couldn't. Circle with a line through itįind out what to do if your Mac starts up to a circle with a line through it (prohibitory symbol). Question markįind out what to do if your Mac starts up to a question mark. 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.
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