Hi I have a MacBook Air A1466 (early 2014) and after water damage I have the following problem: The computer does not start when I press the power button, but if I have not connected the charging cable and unplug the battery, then connect the charging cable again, the computer starts by itself. Then everything is fine and working well until I shut down the computer. With a restart, the problem is not there. The Power button is not damaged. When I am at the login window, the charging cable is plugged in and I shut down the computer, I can normally start it with the power button. But only with the charger cable plugged in!!! When I am logged into my account and then shut down the computer, it will not start when I press the power button, whether or not the charge cable is plugged in. Then again I must unplug the battery and connect the charge cable. I already cleaned all the parts with Alcohol. Maybe someone has had the same problem and can help me. Is it a motherboard problem or the small part where the charging cable is connected to is damaged? I also tried to reset the SMC, which seems not to help. Thank you so much for reading and excuse my English.