The screen stays black when you open the lid to wake it back up?macbook air early 2014 sabrent 2tb nvme. I have hibernation disabled but still several times a day the screen remains black and does not respond. keyboard lighting is on but apple is not. How can I check why it restarts?
The screen suddenly goes blank when using it and you have to hold the power button down to get it to boot back up?
This is not necessarily an indication of liquid damage. If it was a backlight problem, it's unlikely it would come and go randomly.
Post your sleep settings.