Firstly, we should known that, Ventoy emulate the ISO file as a CD/DVD and boot it.
So, if the ISO file can not boot from CD/DVD in UEFI mode then Ventoy will not boot it.
So we can test the ISO file firstly with a VM(e.g. VMware/VirtualBox). Connect the ISO file directly to the CD/DVD of the VM and set the VM to UEFI mode and finally boot it.
If it can not boot, then it's the problem of the ISO file itself.
Secondly, the emulation mechanism depend on the UEFI firmware, so we should make sure the the UEFI firmware in the computer supportes such mechanism.
You can test many different ISO files(e.g. Ubuntu/Redhat/Arch ......) if none of them boot OK, then it may may be the problem of the UEFI firmware in your computer.
If all the above done, and the ISO file indeed can not boot by Ventoy. Then it may be Ventoy issue.
So, if the ISO file can not boot from CD/DVD in UEFI mode then Ventoy will not boot it.
So we can test the ISO file firstly with a VM(e.g. VMware/VirtualBox). Connect the ISO file directly to the CD/DVD of the VM and set the VM to UEFI mode and finally boot it.
If it can not boot, then it's the problem of the ISO file itself.
Secondly, the emulation mechanism depend on the UEFI firmware, so we should make sure the the UEFI firmware in the computer supportes such mechanism.
You can test many different ISO files(e.g. Ubuntu/Redhat/Arch ......) if none of them boot OK, then it may may be the problem of the UEFI firmware in your computer.
If all the above done, and the ISO file indeed can not boot by Ventoy. Then it may be Ventoy issue.