I (pretty new to Linux) have installed the Zorin OS over my previously working Windows 10. Now I found out that the programs I need are not available for Linux, so I wanted to go back to Windows. However, when I wanted to do so I got myself a bootable USB for both Linux and Windows again to go for it. But I am not able to boot anything else than zorin. It seems everything is recognized but I can't change to USB or CD or anything else.
I also have no BIOS menu, which is very strange to me. I can press f2 (default key) on my fujitsu notebook but the only thing that appears is a menu with different zorin options (zorin and zorin with additional options).
Has anyone ever had this problems?
EDIT: This is what it says in my boot options, however, my diagnostic screen says that the other devices are recognized and have higher boot priority.
setup
not boot menu to change the order in order to boot from usb. If for some reason that fails you boot zorin and at grub press 'c' and when presented with a prompt type" ` fwsetup` this should get you to the needed section of setup for changing the settings you need.