ATI Radeon HD 5870 not working! HELP!

Discussion in 'Mac Pro' started by Zeninox, Jan 10, 2015.

  1. Zeninox macrumors newbie

    Jan 10, 2015
    I have installed my new ATI radeon on my mac pro 1,1 2006, and when i turn the mac on it comes a black screen and then a white screen for a second, and black again! I have tested the card on one of my friend's pc's, and it worked perfect! put on my mac it doesn't work. I have also two 6-pin power connectors that works fine. can anyone help me? Sorry for my horrible english :), here is my specs

    Prossecor: 2 x 2,66 GHz Dual-Core Intel Xeon

    Ram: 4 GB 667 MHz DDR2 FB-DIMM

    System software: OS X 10.8.4
  2. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    Why not take a moment and tell us about the important part, the 5870?

    Which model and what connectors and how are you connecting to display?
  3. Zeninox, Jan 10, 2015
    Last edited: Jan 11, 2015

    Zeninox thread starter macrumors newbie

    Jan 10, 2015
  4. 666sheep macrumors 68040


    Dec 7, 2009
    VGA to HDMI? Do you mean DVI to HDMI? Why don't you just use HDMI cable?
  5. bax2003 macrumors 6502a


    Dec 25, 2011
  6. Zeninox thread starter macrumors newbie

    Jan 10, 2015
    Srry i ment DVI to HDMI


    Yes i mean DVI to HDMI
    I have tried. didn't work :(

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