Blank Screen Cursor at Top Left Ubuntu 22.04 LTS

I changed to Nouveau driver and I could not login 

cannot login to tty using CTRL+ALT+[F1 to F7] - Blank screen still persists

Reboot to recovery mode 

- Shift did not work at all

- ESC took me to grub mode - but nothing worked! ( i think i pressed ESC too long!)

- ESC until I saw logo (not ubuntu) on the monitor - 

https://support.starlabs.systems/kb/guides/using-recovery-mode

https://linuxconfig.org/how-to-uninstall-the-nvidia-drivers-on-ubuntu-20-04-focal-fossa-linux

Then I pressed enter for option: Press Enter for maintenance

nvidia-smi

ubuntu-drivers autoinstall

apt-get update

ubuntu-drivers devices

apt install nvidia-driver-535

apt-get purge nvidia*

sudo ubuntu-drivers autoinstall 

sudo reboot

This still did not result in correct configuration. I changed the driver from 535 to 470, then it started working!