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If your Mac displays a gray screen at startup

If you experienced a blank gray screen after starting up your Mac, there may be a problem with a firmware update. If you experienced a gray screen with an Apple logo (with or without a gear icon) and a flashing question mark, there may be a problem with missing, incompatible, or damaged software.

Note: To print these instructions, press Command-P.

  • Make sure the latest firmware for your Mac is installed. You can check the Apple Downloads website for the latest versions.

  • If you just installed a new version of macOS, make sure your Mac has the recommended memory and disk space. To check, choose Apple menu  > About This Mac, or refer to the printed instructions that came with your Mac. If your Mac doesn’t meet these specifications, reinstall your previous version of the operating system.

  • Try using macOS Recovery. It can help you restore from a Time Machine backup, reinstall macOS, get help online, repair or erase a hard disk, and more. See the Apple Support article About macOS Recovery.

See alsoIf your Mac displays a question mark at startupIf your Mac displays a blue screen at startupKeep your Mac up to date
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