@Orca
NVIDIA GK104 [GeForce GTX 770] v
If this is the card you are referring to i think you have to use nouveau open source drivers as Nvidia dropped support for the 700 series to legacy. You may be able to use the Nvidia 470xx version from the AUR. Which means installing with nouveau which is the default entry on the live ISO instead of non-free. Then install the Nvidia 470xx version from the AUR, The 470xx version is the last driver to support that card. The new driver is 495xx series.