Thanks ya'll
Thanks Lucas!
Ogremoustro? What did they replace on yours?
the "Bracket Top Case Front Cables" is the ribbon cable that runs from the logic board to the hdd and it also branches off and incorporates the IR sensor/ Sleep LED bracket.
That ribbon is kinda a known faulty part, a lot of late 2011 and mid 2012 macbook pros come in for hard drive related issues and its actually that cable that causes it. the Hdds are fine but the ribbon causes the drive to disappear or read errors.
Thanks Lucas!
Ogremoustro? What did they replace on yours?