Resposta para "After HDD Replacement, Won't turn on"What the heck… If I take off the battery, then the new SSD boots up…. but it’s a naynay with the battery plugged. What is this? MacBook Pro 2009. Upgraded to 8 GB ram, new trackpad, new power brick, bluetooth keyboard and magic mouse, new optical drive and from 250 GB HDD to 480 GB SSD. Mojave with patch, ok. New battery. It is working like a charm… (yeah, I’m not native english). So… WHAT IS GOING ON?