No GUI or display after install the nvidia driver 535 on Ubuntu 20.04

I am trying to install the nvidia driver 535 onto my new laptop with Ubuntu20.04, the installation went well. But I couldn’t get to the GUI display after reboot. There’s only a short small dash flashing in the upper left corner of the screen.
I’ve tried to reinstall, failed too. Reconfigure, failed as well.

What can I do next to fix it, I am really anxious and confused about that. Much thanks!

Btw: Dell OMEN9slim, Ubuntu20.04, nvidia driver 535.86.05

i’m having the same issue. did you get a resolution?