Hd 5770 not loading

Discussion in 'Mac Pro' started by Alhajimen, Mar 20, 2016.

  1. Alhajimen macrumors newbie

    Alhajimen

    Joined:
    Mar 20, 2016
    #1
    I bought a used Hd 5770 graphics card. The guy tested it in front of me with his 2007 Mac Pro. I bought the power cable on Amazon to connect it with it. I just did installed it this weekend but it can't load it pass the apple logo. I tried putting back my old Gtx card in but it won't work if the hd 5770 is also connected. When I took the 5770 out then the old card works. Pls can some one help me. I payed 160 for the card.
     
  2. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
  3. Alhajimen thread starter macrumors newbie

    Alhajimen

    Joined:
    Mar 20, 2016
    #3
    Mountain lion
     

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