Solved! Insert boot device and press any key

Dec 19, 2018
Hello I need help I just try to boot my acer and show me that message no bootable device--insert boot device and press any key but the first time before I change the boot setting into legacy I was that message no bootable device after to change in legacy there's no change gives it is not start please I need your help
It couldbe a hard drive failure if that was where your Operating System was when you saw it last.

What were you trying to boot from? That hard drive or a USB storage device?