Chosen Solution
I bought new battery for my MacBook Pro 13" Retina Display Late 2013 and the replacement was nice and easy and i were very carefull so i did not break anything. The new battery was working but now the keyboard is not working at all there is not even light in the caps lock button and yes i checked if the ribbon cable was loose but its just fine. The mousepad is working just fine aswell… You would make my day if you could figure this out because i bought the battery because i start school tomorrow… What should i try??
See step #27 of this guide: MacBook Pro 13" Retina Display Late 2013 Logic Board Replacement Use a piece of electrical tape and stick it on the cable. Unlock the tab then pull it into a fully seated position.
