How to correctly connect two video cards to one system unit?

Question

Video cards

Hey!
Returning to the question How to correctly connect a second monitor through a second video card?
TTX:
1050ti
710 plug through ryzen.
And everything would be fine and even the system sees the stub, but the monitors do not work. And Win says - that the VGA compatible video controller, the drivers were found, but an error occurred when installing the drivers (spoiler - the drivers, of course, are plug-n-play in the first place, well, off.)

Help)