Why doesn't the graphics change?

Question

Video cards

Hello! I'm on a processor without a graphics card.
I have a ZOTAC GT430 zone edition video card, I connected the cable to the video card and to the monitor, yes, it booted up and the image became a bit light from dark. But I went into GTA V, but the graphics are also pixelated. How to properly connect to the video card? I downloaded the driver, but I can’t log into my account, I wanted to register through NVIDIA, it says that registration is not yet available, try again later. Through what did not try - it does not work. Maybe the drivers are not the same? Throw off the link to the working driver, on some sites I clicked download, but the download did not go.

Thank you!