Macbook Pro bar only fills quarter of the way after login then my Mac shuts down?

Discussion in 'MacBook Pro' started by FabulousSixties, Nov 18, 2014.

  1. FabulousSixties macrumors newbie

    Joined:
    Nov 18, 2014
    #1
    've recently installed the latest Yosemite update and after restarting my computer it wouldn't boot again. The bar only fills up about a quarter of the way after log in and then my computer shuts down. I have tried disk repair and I have also tried reinstalling Yosemite but I get an error message every time I try. I can use guest mode but that is all. There was absolutely no problems with my Mac before the update. Please help?
     

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