Mac Pro 5,1 fails to boot after recent update
There are similar problems reported earlier but none of the proposed solutions yield any results for me. What happened was that I updated the system from dialog as you normally do when system updates are released. How ever my computer never booted up. I had non standard graphics card that does not have Apple BIOS (Radeon rx580) but this have never before given any problems other than not seeing the apple logo and initial pre-os boot progress bar. This time login screen never came up. So I went and bought old apple original graphics card. What happens is that progress bar goes all the way ready but login screen does not appear. What I have tried so far is:
- I have tried to safe booting and to get to recovery tools (cmd-r and alt-cmd-r-p and so on)but with out success.
- remove power cord for awhile and boot, no success
- remove coin battery from mother board for while NVRAM, no success
- took out all hard drives and insert blank HD, no success not even the progress bar.
I am a bit ****** that system update seem to have completely broken my computer. I have USB -keyboard but I am not sure if that is working OK on the boot because if I press caps lock, LED wont turn on while trying to boot (I am not sure if it should). If I remove all hard drives I get the folder icon and then caps lock work so keyboard is detected at some point of the boot.
Is there anything else I could try to bring this computer to life?
Mac Pro, macOS 10.14