Hi All
I upgraded my Mac Pro 1,1 as follows:
- firmware flashed to 2,2
- 32GB RAM
- Mac-flashed Nvidia Quadro 4000 graphics card
- Pikified OS to 10.11
The upgrade worked fine for a week then the graphics card seems to not be recognised or is malfunctioning.
Graphics card light and fan still operating and 6 pin connector green light on.
I put the old factory graphics card back in and I can boot from 10.7.5.
I can also boot from the OS 10.11 disk.
So it seems 10.11 is working fine.
I have downloaded and installed Nvidia Drivers for both 10.7.5 and 10.11. But no signal to screen.
Any help/ideas gratefully received.
Cheers
Nick
simple sounds like your nvidia card is dead.
This can happen.
Replace it with another compatible nvidia or AMD/ATI card is my advise.