Mac Pro 1,1 Running Windows 10

Discussion in 'Mac Pro' started by jeffcaw, Sep 30, 2016.

  1. jeffcaw macrumors newbie

    Joined:
    Sep 30, 2016
    #1
    Running Windows 10 on my Mac Pro 1,1 64 bit with 16gb of RAM.. only problem is when i boot into the boot screen (holding alt) it is always black. i can select windows drive by knowing what arrow to use from experience but there never is a display. its always black and the monitor says there is no feed coming from the computer. anyway to change this? i was wondering before i hack into a higher operating system on the mac side. currently stuck on Lion. thanks in advance for any advice. completely understand if there is no work around.
     
  2. owbp macrumors 6502a

    owbp

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    Jan 28, 2016
    Location:
    Belgrade, Serbia
    #2
    What graphic card are you using, PC or Mac GPU?
     
  3. jeffcaw thread starter macrumors newbie

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    Sep 30, 2016
  4. owbp macrumors 6502a

    owbp

    Joined:
    Jan 28, 2016
    Location:
    Belgrade, Serbia
    #4
  5. jeffcaw thread starter macrumors newbie

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    Sep 30, 2016
    #5
    --- Post Merged, Sep 30, 2016 ---
    In about this mac: ATI Radeon HD 5770 1024 MB
    I had no problems with boot menu with Windows 7. The problem only started once I upgraded to Windows 10.
    --- Post Merged, Sep 30, 2016 ---
    Thanks for the table... just saw NO EFI BOOT for that card. any recommendations for a different card that would fix the problem would be greatly appreciated if there is no work around....
     
  6. owbp macrumors 6502a

    owbp

    Joined:
    Jan 28, 2016
    Location:
    Belgrade, Serbia
    #6
    Mac's EFI shouldn't be affected by Windows installation (or any other OS for that matter).
    The only things that come to my mind are try different port on 5770 and zap the PRAM.

    Btw, i had Win 10 for almost a year (same machine as yours but HD7950) and it gave me problems like:
    - wake from sleep always resulted in black screen (monitor disconnected)
    - awful speeds with BCM94321MC wireless
    - and after last Anniversary update it killed Bootcamp HFS drivers
    So i reverted to Win 7 x64 and everything works again as it should...
     
  7. jeffcaw thread starter macrumors newbie

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    Sep 30, 2016
    #7
    great advice... just having a hard time leaving a machine i absolutely love. especially when it can serve as a mini-heater in the winter. what OS are you running on the Mac side?
     
  8. jeffcaw thread starter macrumors newbie

    Joined:
    Sep 30, 2016
    #8

    btw... zapping the PRAM worked. thanks so much. was cleaning up my email boxes and stumbled upon your advice. apologies for not thanking you earlier! have a great new year. let me know if you ever upgraded to a newer OS on your mac side and whether it is worth the hassle.
     

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