Mac Pro (2009) display won't turn on.
Hello,
I’m having a little issue. I took my Mac Pro apart to clean it and when I put it all back together, I get no video and my monitors don’t turn on. I tried booting the computer with each video by itself and it doesn’t work either.
The computer turns on, I can hear the hard drives boot up, all the fans turn on, just no video. What could be the issue?
Any help would be greatly appreciated.
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Do you hear the boot chime? Does capslock key work after you think it's "finished" booting (helps if your keyboard has a capslock light). If yes, then yeah it is probably a video issue. If not, something else is wrong and it didn't finish booting. Also if you short-press the power button and it turns off immediately then it probably didn't finish booting either.
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