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ProTools808

macrumors newbie
Original poster
Dec 6, 2020
27
4
hi mac pro family
anybody can help me abut this problem:
I was installed a flashed HD7970 GPU, under Mojave 10.14.6. But before do this, maybe I made stupid try to use this “open core” thing. When I see is not my way, I tried to return the method.
I allready uninstalled “open core” utility and still use Mojave. I removed my RX580, install HD7970, but when I try install a new “virgin” Mojave from Recovery, the method isn’t workin’. If I try to get in the “select disc” menu with “option” key its doesn’t works, allyways restart and restart “in loop” and if I boot normal mode, the screen is going to green with black and purple frame
like this

do you have any idea?
thank you
 

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