Zorin 18:Built-in wireless(internal dongle/motherboard)keyboard works in GRUB but not in Zorin 18 Pro (NEC all-in-one)

Using an external USB Keyboard to edit your grub file, have you tried any grub parameters like
i8042.reset i8042.nomux=1 i8042.nopnp=1 i8042.direct or i8042.dumbkbd=1 - I am listing several that you can try to find one that works.