I believe Zorin does have a backup program, which you can use to back up data to a hard drive or Google Drive (if you have a Google Account). By default, it only backs up all folders in your home directory.
Or you could use method 2, where you can copy your important data to USB/cloud drive.
Hi Turtle11, I have reinstalled with safe mode on now, but the problems reappears. It was fine during trial, but not after actual installation. Would you know where else I can look at to investigate?
Maybe try booting into Wayland?
(In the login screen, click your username then click the cog icon (located bottom right) then click Zorin Desktop on Wayland).
It names in gpu "artefacts" - you can used a google to research what that means.
I have that experience with my gpu amd radeon r9 390 the processor gpu is working ok but one from memory gpu propably is damaged broken - ( i mean ram in gpu) - it propably could be also wrong drivers or temperature. I tried downgrade speed gpu and Mhz maybe will be life longer.
It is hardware issue not a operating system.
The best idea using live usb and backup all important files.
Thanks for your input, @Bourne. It was working on live USB, but not after I performed the installation. the graphic card was working fine when it was in Windows thought. (I migrated from Windows to Zorin today).