When I received this macbook and turned it on for the first time, it displayed an error message indicating that it was not able to find the mac operating system. I'm not sure what happened but I ended up having to call amazon who then transferred me to apple who then transferred me to someone else at apple who the had to talk me through reinstalling the OS. Overall, I had to spend ~4 hours of my life trying to fix a problem that this product shouldn't have had in the first place. I'm not sure what happened but I am extremely disappointed. You would think they would check to see if the OS was on the laptop before sending it out. But maybe I'm expecting too much