Help! GTX 970 Black Screen Sierra 10.12.3

[ivanquero92ta]

Hi, I need help please
This in my config:
- i5 6500
- Gigabyte z170 hd3p
- 32 gb ram dd4 2400 mhz
- Gigabyte GTX 970 G1

I've installed Sierra10,12,2 without an external GPU, using Intel Integrated 530 Graphics, and all worked fine.
After I've upgrade sierra to 10.12.3 with the 530 and all works fine.
Now I've installed a GTX 970, installed Nvidia web drivers for 10.12.3, nvdia web = on on clover , nvdia_drv=1 and monitor plugged in with HDMI.
But if I don't put nv_disable=1 flag, after the apple logo the screen shut off. I've tried many solution on web but nothing works. I' ve also set SMBIOS as Mac Pro 6..but nothing changes.
Help me please!

 

[izo1]

https://www.tonymacx86.com/threads/...-imac-15-or-imac-17-system-definition.183113/

 

[ivanquero92ta]

Yes, I've read this post and I've installed AppleScript.app.
Mac starts but don't recognize proprerly the GPU. It's still NVIDIA Chip Model 3 MB.
I don't know how to do the other Method mentioned in the post (ssdt? GFX1).
Someone can explain me how to do step by step?

 

[ivanquero92ta]

Now without any flag, mac boots normally but still with poor grafics and NVIDIA Chip Model 3 mb.. Help me please!

 

[bigsicret]

Use AGDPfix1.3, iMac 17,1 defs, and know : As of macOS Sierra, nvda_drv=1 in config.plist under Boot > Arguments is no longer working to initiate drivers. Clover has been updated with a new System Parameter setting called NvidiaWeb.