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hd unmounting gpu macbook pro 2011

  1. ShanB

    HELP MacBook Pro hd unmounting

    Help PLEASE my macbooks hd keeps unmounting making it unresponsive when I try to start up!! I went to disk Utility in recovery mode. This happens with 2 different hard drives. I was having trouble with it previously and was told it might be the graphics card Apple techs could not confirm...