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I reinstalled macOS on my imac and after startup I just have a gray screen and cursor, sometimes the screen blinks abruptly in white and stays gray again. How to solve this?
iMac Line (2012 and Later)
See if you can boot into safe mode How to use safe mode on your Mac - Apple Support and then reboot normally.
Okay, I'll try, I'll keep you updated
I booted from Safe Mode, I have a gray screen and cursor again. Then I rebooted in normal mode and I have the same
Gray screen after reinstalling macOS
