Do you have an UEFI or legacy BIOS? If you have an UEFI, choose GPT as partition scheme when you create the Zorin bootstick, and when you have a legacy BIOS, choose MBR as partition scheme.
Here are some tips what to do before the installation:
How much RAM do you have? With 8 GiB or less RAM I'd recommend Zorin lite.
Try to install Zorin offline without connection to internet and don't install updates and drivers or other software during installation.