Help,
last night after calibrate battery on macbook, it can't turn on with pressing 1 time on power button, it must hold for 10 second to turn on.
But, if i plug in magsafe to macbook, it can turn on with pressing 1 time on power button.
I try to reset smc, vram, pram and reinstall os x.
But it doesn't help.
Macbook Pro 15" Mid 2014 OS X Yosemite