I was using my macbook to convert the songs from my newly bought CD. The battery was low then so I plugged in the magsafe charger as usual, however, the battery was not charging. I originally thought that it was some kinds of software issues so I just restarted my mac but it doesn't have enough power to start again. Now my new CD is stuck in my mac. How can I turn on my mac again so that I can get back the CD? I won't bother to replace the battery of my old macbook as I already got a new Mac.