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Help! GTX 970 Black Screen Sierra 10.12.3

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Joined
Jan 3, 2017
Messages
4
Motherboard
Gigabyte Z170 UD TB
CPU
i7–7700K
Graphics
GTX 970
Mac
  1. iMac
  2. MacBook Pro
  3. Mac Pro
Mobile Phone
  1. Android
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!
 
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Joined
Jan 3, 2017
Messages
4
Motherboard
Gigabyte Z170 UD TB
CPU
i7–7700K
Graphics
GTX 970
Mac
  1. iMac
  2. MacBook Pro
  3. Mac Pro
Mobile Phone
  1. Android
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?
 
Joined
Jan 3, 2017
Messages
4
Motherboard
Gigabyte Z170 UD TB
CPU
i7–7700K
Graphics
GTX 970
Mac
  1. iMac
  2. MacBook Pro
  3. Mac Pro
Mobile Phone
  1. Android
Now without any flag, mac boots normally but still with poor grafics and NVIDIA Chip Model 3 mb.. Help me please!
 
Joined
May 15, 2016
Messages
66
Motherboard
Gigabyte Z170X Gaming 7
CPU
i7 6700
Graphics
Gigabyte GTX 960 G1 Gaming
Classic Mac
  1. Performa
  2. Power Mac
Mobile Phone
  1. Android
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.
 
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