I have a MacBook Air from early 2014. The problem with the MacBook is that it won't boot if the battery is plugged in. It will reach the Apple logo and complete about 1/3 of the loading bar and then it will reboot over and over again with the same results. As soon as I disconnect the battery it will boot normally. The magsafe LED won't come on at all in both cases. I have tried replacing the DC-in board and another magsafe adapter without any avail. Could somebody help me out? I suppose this a problem with the logic board?