If nothing is shown even after checking/ticking 'Show hidden devices' then it simply seems to mean Windows doesn't detect your graphics card at all; effectively what you've mentioned. Only this would be confirmation of it.
To be sure though, I assume when you write of black screen it means you have installed the graphics card, plugged in the monitor cable to the graphics card port, but there is no display. When the PC is turned on the monitor may show a message like 'no display'. I.e. you cannot even see the BIOS splash screen. If so, it sounds to me the graphics card is faulty.
This is different to seeing the BIOS screen and then losing signal when Windows try to boot. If you can see BIOS, but then the screen goes black; then I believe it indicates a driver issue. To verify, you'd need to boot into safe mode. If there is a display, then it's a driver issue.
Others may know of other diagnostic methods you could try.[
omg thank you the bios loaded and when i exited i got a display i tried the driver and installed fine thank thank you thank you thank you thank you thank you you're the best dude