Laptops typically have only a few user-changeable settings in the BIOS, only retail motherboards have a full range of BIOS settings. The BIOS is very limited on laptops to stop you messing it up and expecting the manufacturer to fix it.
"No Bootable Device" appearing on screen when you turn your laptop on has nothing to do with UEFI/Legacy selection.
It means that you either need to reinstall Windows, or the HDD may have failed. There may be other causes for the error which I'm not aware of.