GTX580 10.10.2 boot loop

[ArcticFox]

I have a 10.10.0 install USB and my card works great using clover,imac 14,2 and relevant dsdt. When I install 10.10.2 update it shows the Apple loading screen, screen goes black and then machine just reboots and it does it in a loop.

What is going wrong?

 

[ArcticFox]

Just to answer my own question, I changed to Mac Pro 6,1 and everything seems to be OK now. Installed the latest Nvidia Web Driver just in case.