Chosen Solution
I followed the instructions in this video. https://www.youtube.com/watch?v=cbX7OwEv… I unplugged the battery for 30 seconds. When I plug it back in the fans start running and it starts to enter the boot sequence. Within 20 seconds it powers off again and I have to reset it the same way to get it going. But it never stays booted. The battery indicator light on side lights up all green when I press the button. However system won’t boot at all. Does this simply mean I need a new battery?
A new battery won’t necessarily solve your problem unless you are using a lower power charger as your default one. If you use a 85w charger, which is standard for your machine, your mac should be starting/working correctly regardless of battery state. In case you have the correct charger try first unplugging the battery from the logic board and see if the Mac boots up to desktop. Anything unusual happened lately to your mac ?
