Since I got the new MBP last year, my 2013 MBP has been unplugged hanging out on my counter. Tonight, I plugged it in for the first time to double check everything was backed up before I overwrite the HD and try to sell it. I backed up before but I'm paranoid about backups and wanted to do another check. Problem is, the little light on the charger was orange for hours as it charged, it never turned green and when I opened the shell to try to turn it on, I got nothing. Is my computer dead or is there something I can do (take it to an Apple Store, etc)?