How to setup an AMD graphics card (250x) with Sierra

I've being using my current hackintosh with no issues with the inbuilt intel graphics. However i've now installed a amd 250x (1gb) card and haven't changed my setup, when it's boots past the apple logo screen the screen goes completely yellow. The mouse works but then disssapears. I'm using the latest clover. What's the best way to setup an AMd 250x card?

(note I just tried to select inject AMD in clover boot options and that just gives me a blank screen instead --- I haven't transferred any other kexts yet--- not sure what is needed?)

specs : Gigabyte GA-Z87M Intel i5 4750 (and now AMS Asus r7 250x 1gb)

submitted by /u/YuntiMcGunti
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