Hi guys , so I bought my MacBook Pro 13 inch that was running completely fine from a pawn shop .. Unfortunately when I moved up to kelowna for school it completely locked on me and the icloud sound and lock went on .. I called apple and the pawnshop and neither of them are doing anything for me , I tried telling apple to contact the old user so I could give it back but apparently it's against ther policy so I'm left with a MacBook Pro that's really useless ATM. I'm a student and really need to solve this problem ASAP so I can write my paper. It has a 4-pin lock ... I've seen that changing the amount of ram will unlock it but only for models that are older than 2010. I'm stuck with this Mac and running out of options please help so I can make the most out of the money that I paid for it so it doesn't go to waste ! My parents are going to kill me hahahaha (because I used their money) help will be appreciated!!!