I tried Legacy BIOS and UEFI, both instances hang during the boot process. The Legacy BIOS did bring up a text menu momentarily before it hung with a black screen with a flashing cursor.
I have had luck getting Ubuntu and other Linux distros running on my PC - but there has sometimes been an issue with some of my more modern Nvidia RTX GPUs where the open-source nouveau drivers don't recognize the Nvidia GPU. This feels similar.
I have been able to get past this by being able to modify the grub boot options with a nomodeset option to keep the distro from scanning for the graphics configuration, but I couldn't find an way with ESET SysRescue to modify the boot options.
There are a lot of folks out there with Nvidia RTX GPUs that will face this same issue, so it would be nice if there was a solution available.