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I have an iMac (2015, 27"). It was in sleep mode and when I brought it up, the display was blank. I turned it off and started it up and could hear the system doing something so the power supply is operative but the screen remained blank.
iMac 27″, macOS 12.0
Please attempt a Safe Mode restart. If the problem is still occurring it’s a hardware issue and that means a trip to your local APPLe Authorized Service Provider.
Please attempt a Safe Mode restart. If the problem is still occurring it’s a hardware issue and that means a trip to your local APPLe Authorized Service Provider.
Blank Display
