Wifi Driver Gone While Using

Dear Team

My monitor started flickering immediately while using. So I researched online and I found some recommendation that to update the drivers. So, I went to software updater settings and changed from:

Nvidia driver to x.org X server

And then restarted.

After the restart no external display detected, no wifi!

When I tried “Try Zorin” via USB, everything works fine.

Please help, I cannot even imagine a fresh install again!

Thanks