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    MP 1,1-5,1 MP 4.1/5.1 Recovery mode/boot screen won't work at all

    Hi! At start I'm very sorry for my English. It's not my mother tounge. I'm quite new in this. All I wanted is cheap Mac device that is quite powerfull so I bought 2009 Mac Pro with HD 5870. All I did was to change graphics card so I bought RX 470 and Installed it. Beacuse I wanted to play some...