old news but someone still meet this problem.
since Apple start using L-shaped MagSafe power adapter, some guy may find the new type can't instead of their old one.
Maybe just update your firmware http://support.apple.com/kb/TS3499
there may be other reasons, just have a try.
since Apple start using L-shaped MagSafe power adapter, some guy may find the new type can't instead of their old one.
Maybe just update your firmware http://support.apple.com/kb/TS3499
there may be other reasons, just have a try.