MacBook Pro newly replaced battery drops from 50% to 7%i replaced a battery in a macbook pro which coconut battery reported was old and worn out. low full charge cap, high cycle...
Answer to "One screw just came out and won't screw"It seems like maybe the screw mount has failed on you where the screw usually seats to hold the back cover on. I have had luck using a small amount of hot glue on the underside of the screw applied with a toothpick, simply to plug that hole and avoid dust and other particulate having easier access to the inside of the case. Otherwise, if all your other screws are intact, it should not be much of an issue for you. This is intended to be a cheap and quick fix though, and if it concerns you a lot, other solutions may be required. In the case of an apple laptop… replace the chassis?