Hi,
I recently got this error in which when I login to my user, zorin shows a black screen with static all over. Tty and the greeter work. I have zorin lite installed on my laptop.
P.S. I have no idea how to make a post so please forgive my illiteracy.
Do you know what graphics card you have in the laptop? Is it Nvidia by chance?
Can you see a "gear wheel" icon next to your user login? Click on that and select login using X instead of Wayland to see if any difference. You can always go back to Wayland if not.
EDIT: I now see from your profile that you are on Lite. Is that 16.3 Lite?
I am not going to be much help but this thread is similar; Black screen
Maybe @Aravisian will come along here and be able to help you with this as he is very conversant with Lite (xfce). But all are busy with issues with recently released Z17, so may need some patience. Zab