Enable iGPU?

I had a fully working Hackintosh but I think I just lost either my GPU (RX 590) or my PCIe slot and I have no way to test anything as it's my only desktop PC and it has a Mini ITX mobo (Asus Z370-I). The only thing I know is the GPU doesn't output any signal even though it lights up and the fans spin. Anyways I have already given up on that so I'm here for a different reason. The machine seems to work okay if I plug the monitor to the motherboard HDMI (tested on Windows), but I can't access my Big Sur drive (It crashes when booting) because I never bothered to enable the integrated graphics (Intel UHD 630 I think, or whatever comes with the i5-9600K) as I had been using my dedicated GPU before it stopped working.

I guess I can plug my drive to my real Macbook to change whatever EFI configuration I'm missing for the iGPU to work, but I don't know exactly what it is that I need to change. I just want to remove my dead GPU and use integrated graphics instead. Any help?

submitted by /u/IridescentIce97
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