[QUOTE=I think you have to go to BIOS > Boot > Secure boot -> OS Type: Windows UEFI; Key Management -> Clear Default Secure keys; BOot -> CSM > Disabled; F10 to save changes & reset ad than you can instal lit.
BIOS 7803
Tried that and then my computer would not boot. Gave some warning about M.2 SSD compatibility and UEFI driver. I have a Samsung 960 EVO SSD