hi, ive got a macbook here that runs perfectly on a battery, but it wont run on the power adapter. the magsafe turns green when plugged in, but it does not charge the battery or power the computer. any suggestions? thanks all ive replaced the DC in area where the charger plugs in with a working one, nothing. also tried the battery connector with no help there. so something else is wrong here, just dont know where to go next. if i plug the connector AND the battery in, the computer says its running off power adapter and not charging. if i then disconnect the battery and leave the cord plugged in, the computer shuts off so its not really running the computer, its just being read that it is.