Fixed audio and video - developed battery issue

Mi Problema

No audio on MacBook air. Video wouldn't play either.

Mi Solución

Everything went smooth. Followed instructions, all went well. However, after restarting and plugging in the charger, the MacBook air no longer charges. I'm guessing something with the battery was damaged. I can't imagine what happen. I was extra careful and everything went smooth. I'm stumped.

Mi Consejo

I would make sure the computer is powered down before starting.