At the login screen and during usage, a flickering dark shadow appears on the top half of my screen.
Please check the videos:
I have done:
* Apple Diagnostics and it says that there is no hardware problem.
* Safe Mode and it continues.
* I reseted NVRAM, still there.
* SMC reset; nothing
* macOS Sierra, clean install; now its even worse.
Any advice?
What could it be?
Please check the videos:
I have done:
* Apple Diagnostics and it says that there is no hardware problem.
* Safe Mode and it continues.
* I reseted NVRAM, still there.
* SMC reset; nothing
* macOS Sierra, clean install; now its even worse.
Any advice?
What could it be?