Hi all, My macbook 2009 suddenly will not turn on one day. -no response at all when pressing power button. -plug in power adapter to magsafe does not show any light (no green / yellow) I went to apple store and they told me they don't have parts for this and cannot fix it for me. They suggested its the issue with magsafe dc-in board since they tried with a new power adapter and still there is no led. So I did bought a new magsafe dc-in board from 3rd party, changed it, but still dead. Tried smc reset didnt help. What should i look into next? Would it be just dead battery or something else? Any advise would be great. Thanks.