According to Apple:
If your Mac starts up to a blank screen:
A blank screen (black, gray, or blue) should appear once or more during startup. If your Mac appears to be stuck on a blank screen, follow these steps.
Try to start up from macOS Recovery:
If your Mac seems to be turned on but the screen remains blank, follow the appropriate steps depending on whether you're using a Mac with Apple silicon. If you're not sure, you can try it both ways.
Apple silicon:
- Press and hold the power button for about 10 seconds, until you see the startup options window, which includes a gear icon labeled Options. Select Options, then click Continue.
- If you never see the startup options window, release the power button, then repeat step 1.
Intel processor:
- Press and hold the power button for about 10 seconds.
- Press and release the power button, then immediately press and hold Command (⌘)-R until you see an Apple logo () or other image.


If you can start up from macOS Recovery:
If you started up from macOS Recovery, you should see a utilities window that includes Disk Utility. Select ➢ Disk Utility, then click Continue and follow the steps in this article:
Use Disk Utility to repair your startup disk

- If Disk Utility found no errors, reinstall macOS.
- If Disk Utility found errors and repaired them, restart your Mac.
- If the issue returns after restarting, reinstall macOS.
If you can't start up from macOS Recovery:
If you can't start up from macOS Recovery, your Mac might not be turning on at all:
Click ▶︎ If your Mac doesn't turn on for step-by-step instructions.
Contact us:
If the issue continues, contact Apple Support:
Click ▶︎ macOS User Guide. 📖