PC will not load Ventoy

[Hairy Mutley]

Ventoy 1.0.19 still does not work for me (BIOS still reports "Operating System not found").
For what it is worth, if I try to create a bootable USB from Linux Mint 20.0 x64
- if I create it with Etcher 1.5.45, it produces the same result (OS not found)
- if I create it with Rufus 3.11, it boots without a problem