I would uninstall all Nvidia drivers, then shut down and remove the videocard. Fire up the computer using integrated graphics. Make sure Windows is updated, the motherboard chipset drivers are installed or updated, the latest bios is installed. In short, get the computer in working order. Test it with a couple of programs if you need to. Then download the Nvidia drivers if you don't still have the ones you already used.
Now reboot into the motherboard bios. It's a UEFI bios, so if you are in UEFI mode try switching to 'legacy' mode. Also, temporarily disable secure boot if it's enabled. Once you do that, save your changes and shut down. Then install the card and drivers.