Macbook Pro Win 7 & OS Install issue

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

  1. mcconkey1987 macrumors newbie

    May 11, 2014
    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

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

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

Share This Page