Installing
2. Setting Up NVIDIA Driver Repo
How to Add NVIDIA Graphics and GPU Drivers Linux Ubuntu PPA Repo
Possibly now see How to Check NVIDIA Graphics Card Model Supported Drivers.
3. Installing NVIDIA 430 Driver
Then to Install NVIDIA 430xx Driver
Simply play:sudo apt install nvidia-430 nvidia-settings
And in case of Issue try instead with the more powerful aptitude Package Installer.
So first, to Install Aptitude run:sudo apt install aptitude
And next try the Setup again playing:
sudo aptitude install nvidia-430 nvidia-settings
Last, to Load your barely New Graphics Driver Reboot with:
sudo reboot now