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no output

  1. T

    MP 1,1-5,1 Mac pro 2009 4,1 Boots up but no video output (black screen)Mac pro 2009 4,1 Boots up but no video output (black screen). It was working fine on t

    Mac pro 2009 4,1 Boots up but no video output (black screen). It was working fine on the old OS that was on it. I want to update to the highest OS it can run. So I did. But after that I get an black screen. I tried to reset some things like time code, vram etc. Nothing works. Can't even go...
    • Teachermark01
    • Thread
    • black screen startup mac pro (2009) no output
    • Replies: 17
    • Forum: Mac Pro
  2. S

    Help: Mac mini to Dell Monitor no Output (Issue & temporary workaround)

    Hi, I bought a new Dual Core i7 16GB 1TB Mac Mini a month ago. All of a sudden (over the last week or so), when booting the machine from off, no display output is sent to my Dell monitor. The Mac Mini itself appears to boot with no issues and is not in sleep mode. The monitor just insists...
    • soziblewuup
    • Thread
    • dell displayport issue mac mini mini displayport no display no output ultrasharp workaround
    • Replies: 9
    • Forum: Mac mini
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