You should be able to enter BIOS/UEFI on your HP elitebook, regardless of any operating system Windows or Zorin.
To do that: Restart your computer, then as soon as the HP logo appears repeatedly tap the F10 key. That should get you to your BIOS screen to check if laptop has UEFI. Also within BIOS, check that Secure Boot and Fast Boot are disabled.
If you have UEFI, Rufus should be set GPT (for UEFI) not MBR (for Legacy).
See picture of Rufus "Partition scheme" menu choices in this post: ASUS V500 boots into Grub - #6 by Nourpon