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mac pro 5.1 boot issue

  1. F

    MP 1,1-5,1 I cannot use any boot key combinations-Mac Pro 5.1 12 core, 3.46 Ghz, 128 GB RAM) with Mojave, GPU Radeon RX580 with 8 GB

    I've purchased this GPU card last April, I think because of that I cannot use any boot key combinations. I've tried putting back my old GPU and it's still not working. I reinstalled Mojave as well...still no luck. Besides I want to installa Catalina Patcher, I cannot afford not have these boot...
    • Favius
    • Thread
    • mac pro 5.1 boot issue
    • Replies: 11
    • Forum: Mac Pro
  2. kinless

    MP 1,1-5,1 Mac Pro 5,1 with Pulse RX 580 DisplayPort boot issue

    Howdy fellow Mac Pro nerds. Scrounged through these forums but couldn't find anything on the exact issue I'm having...maybe someone who has more knowledge than I can help point me in the right direction: Mac Pro 5,1, latest 144.0.0.0, Mojave 10.14.6 (not using OpenCore or anything like that)...
    • kinless
    • Thread
    • displayport mac pro 5.1 boot issue mojave 10.14.6 pulse rx 580
    • Replies: 9
    • Forum: Mac Pro
  3. sbyseven

    MP 1,1-5,1 Strange issues with my cinema display 27

    Hi all, I have a cinema display 27 with a mac pro 5.1 that works when it wants. If I don't make any changes to the software it usually works perfectly, but if I make any changes like updates or so, it doesn't work at all; even if I plug it into a mac mini 2012 or my MacBook air 2017 it doesn't...
    • sbyseven
    • Thread
    • 27 display 27 inch cinema display cinema cinema display cinema led display cinema screen mac pro 5.1 2010 mac pro 5.1 boot issue mac pro 5.1 bootroom
    • Replies: 3
    • Forum: Mac Pro
  4. M

    MP 1,1-5,1 Mac Pro Triple boot

    Hi everyone, I'm sorry to start a new thread here about that but can't find the one I followed... it was a 300+ pages one about installing windows on a Mac Pro 5,1. it's been months I haven't been here and every threads on this subject seem to be talking about open core (with is not the method...
    • MacProXUser
    • Thread
    • dual boot mac pro (2009) mac pro (2010) mac pro (2012) mac pro 5.1 mac pro 5.1 boot issue windows
    • Replies: 11
    • Forum: Mac Pro
  5. Greg Punzo

    MP 1,1-5,1 Am I really the first person to ever have this problem with a Mac Pro 5,1?

    I've tried googling everywhere to see if someone else has had this issue, there is no search result anywhere after this much troubleshooting, especially with a mac pro. No matter what I do I get the question mark folder with no chime when trying to boot up. This all happened when trying to...
    • Greg Punzo
    • Thread
    • mac pro (2010) mac pro 5.1 mac pro 5.1 2010 mac pro 5.1 boot issue mac pro 5.1 no start
    • Replies: 12
    • Forum: Mac Pro
  6. Ron Harrison

    Mac Pro 5,1 (Mid 2010) GTX 770 black screen in Windows 8

    Hi, I've got a Mac Pro 5,1 (mid 2010) and I've put an Nvidia GTX 770 in it and I'm trying to get it to work in Windows 8.1. I got into the installation yesterday by booting off of the W8.1 DVD with the 770, but I had to exit it because I had multiple drives plugged in and it wouldn't let me...
    • Ron Harrison
    • Thread
    • black screen booting up graphics card gtx 770 mac pro (2010) mac pro 5.1 mac pro 5.1 boot issue windows 8.1
    • Replies: 9
    • Forum: Mac Pro
  7. D

    Mac Pro 4,1 upgraded to 5,1 wont boot

    I hope someone can help me with this issue. I have a Mac pro 2009 4,1 that was flashed to 5,1 before i bought it. It has had some issues with kernel panics, sudden crashes, etc, never any indication of what the cause may be. Usually it freezes and then i just do a hard reboot and comes back up...
    • databaze
    • Thread
    • mac pro 5.1 boot issue mac pro diag leds mac pro flashed no boot
    • Replies: 4
    • Forum: Mac Pro
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