I say thank you because you have been of great help but reluctantly the problems are not over. I managed to install Mojave correctly, but, before going into the resolution of the problems due to the various drivers, I tried to restart the computer but neither the PC shows me the boot options nor does it make me start Windows. When I start Windows I get a blue screen with the error: 0xc0000225. So the problems are: I can't start Windows, I can't start Mojave, except from usb. Now I need more help than ever.