To fix #Windows error "Boot Device Not Found ", you can check your #BIOS settings and ensure the right device is first in the boot order.
When you start up your #computer, you can change the order of the devices connected to your #PC in the BIOS menu.
If it already is and the “no bootable devices found” error persists, then something is wrong with your hard #drive.
https://outsourcepath.com/resource/boot-device-not-found-error-in-windows-10