Error after installing 2 graphic card 4870x2

Discussion in 'Mac Pro' started by Nevado7, Nov 12, 2009.

  1. Nevado7 macrumors newbie

    Joined:
    Nov 5, 2009
    #1
    Hy a few weeks ago i asked about installing a HD4870x2 Monster in my new MP4,1 just for using in windows.
    I ordered those 2 power cables to connect the gpu to the mainboard but when both cards are in the mac (gt120 and hd4870x2) the system won´t start to any OS either mac nor win7.
    Does somebody have a reason!?! :confused:
     
  2. Cindori macrumors 68040

    Cindori

    Joined:
    Jan 17, 2008
    Location:
    Sweden
  3. Nevado7 thread starter macrumors newbie

    Joined:
    Nov 5, 2009
    #3
    Hy Cindori,

    i use both 16x Lines. The first one, is still the gt120 and the second slot with 16x lines i wanted to use for the radeon.

    Should i use another constellation!?
     
  4. Cindori macrumors 68040

    Cindori

    Joined:
    Jan 17, 2008
    Location:
    Sweden
    #4
    try set your windows disk as startup disk, then shut down, remove GT, put radon in lowest slot and boot
     
  5. MacVidCards Suspended

    Joined:
    Nov 17, 2008
    Location:
    Hollywood, CA

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