Dual monitors not working after installing windows?

Hi, I've had a hackintosh running for about two years, and I just decided to add a windows drive for games, etc. It's just a normal drive, nothing crazy, but after installing, my second monitor started flickering constantly and turning off, but only when booted to OSX. Any ideas on why?

MOBO: Gigabyte Z170 Gaming 7

CPU: i7-7700k

GPU: GTX 1070ti

Running with Clover, ram and hard drives are standard, but I can provide them if necessary.

As a side note I have tried:

- Removing the cable for the good monitor and booting to just the monitor with problems. Clover works, but once it goes through the boot process, it black screens.

- I've double checked that NVIDIA inject is disabled, I'm using the latest Nvidia web drivers.

- I don't have another cable to test with, but the monitor is DVI, so I'm using HDMI to DVI. It worked for a year, and I figured the timing was too bad to just be coincidence (also, it works with windows, so).

Any help is greatly appreciated :)

Thanks!

submitted by /u/Roflrofat
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