Hello. I have just recently sold a MacBook and as trying to reset it using "Install OS X". The first time I tried installing it it worked fine, but it aid it would take 13 hours. So I cancelled it to do it later at a better time. The next day I booted it up using same steps I did the day before, although once I get to the end part when I choose the hard drive and sign in to my Apple ID, it says: "An unexpected error occurred while signing in. AMD-Action:Authenticate:SP.". Anyone know how to fix this?
MacBook, OS X El Capitan (10.11), MacBook Late 2009 13"
