Dear all, I just received my refurb MBA 2014 version. Now I am doing the set up. But when I go through the wifi connection, the Mac keeps saying that there is a server error and could not sign me in the Apple ID I created before I purchase the MBA. However, my other electronic devices like my smartphone has no problem with the wifi connection. Also, I plug in the power cord just for 20 minutes. It was really hot!!! Is there a problem with this laptop? Should I return it. Really appreciate if you could help.