So the only option to install to is the USB drive. Nothing I do lets me access the internal drive. I want to overwrite the existing windows install, but am not getting the option to use that drive.
I should add that I tried starting the installation from inside "Try Zorin" and get stuck at the same screen. I have no access to the machine's harddrive and no option available on the scree that does not return an error message.
I went into bios and turned off secure boot, because I am absolutely not getting that screen. I confirmed I am also on the 5th step like you are and still getting the same screen.