Macbook Pro Win 7 & OS Install issue

Discussion in 'MacBook Pro' started by mcconkey1987, May 11, 2014.

  1. mcconkey1987 macrumors newbie

    Joined:
    May 11, 2014
    #1
    I have a MBP to repair, the user has installed win7 over an existing win7 partition, i have tried reinstalling the OSx but will not boot from USB using the option key. The option key doesnt do anything. It keeps going to a black screen on windows saying No bootable device..

    Any Ideas?
     
  2. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #2
    Is the USB even bootable? Did you create the bootable USB with DiskMakerX?
     
  3. mcconkey1987 thread starter macrumors newbie

    Joined:
    May 11, 2014
    #3
    Yes, I've used the pen before and was created using Diskmaker. Just keeps going to windows cannot find device..
     

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