In your BIOS settings is Secure Boot disabled?
You can try the -33 one... since you already have it.
Reboot - tap tab or esc at the Motherboard splash screen to make the Grub Menu appear if it does not appear at boot by default.
From that menu, select Advanced Options for Zorin using the Arrow Keys.
Then arrow key to Zorin on 6.14.0-33 and tap the enter key.
Once booted, ensure you are on -33 using uname -r in terminal.
IF still no good... You can install the 6.12 with the mainline installer