Yes, while i do have UEFI-CSM as an alternative i did try native uefi for Vista and 7, one would need a VGA emulator like UefiSeven for UEFI class 3 or something like that or you could replace the bootmgr.efi file and maybe even bootmgfw.efi and replace it with windows 10's, anyhow while it works on 7 vista just gets stuck on a black screen, it just doesnt boot at all, i even tried with windows 8.0's files and it still didnt work.