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When I start up using the power button, the screen has green lines and a green Apple icon. It may start up, but it may automatically shut down and restart. It will work fine, but if I shut down, when I restart, the issue happens again.
MacBook Pro 16″, macOS 11.3
I agree with lobsterghost1, but first try resetting the NVRAM of your Mac. It may fix the issue - Reset NVRAM on your Mac - Apple Support
If it persists, take it in for service - Find Locations - Apple
I agree with lobsterghost1, but first try resetting the NVRAM of your Mac. It may fix the issue - Reset NVRAM on your Mac - Apple Support
If it persists, take it in for service - Find Locations - Apple
vertical lines are most often used by issues in the display component itself, not in the system mainboard.
To obtain service, you must swear that you have a backup. If you don't already have one, now is the time, and we hope it is not too late.
I'd hazard a guess your screen is failing and you have a hardware issue. Schedule an appointment at your Apple Store Genius or Apple Authorized Service Provider for service options.
What does a green apple logo mean at start up?
