You are now stuck in an awful position.You'd love to use a recovery USB or a USB with your OS's ISO on it to fix this problem, but because you can't access the BIOS (to change the boot order) without accessing your unaccessible OS, you can't.
The case that I typically see is a machine that boots to a black screen after maybe a fraction of a second of showing the manufacture's splash screen. In fact, it's broken so badly that cold boots and turning it on and off again many times change nothing. The internet tells you that if you want to access your BIOS, you have to use your OS to tell your machine to boot to the BIOS on its next shutdown. Because it boots so fast, traditional tricks for accessing the BIOS (e.g.Your boot order options in your BIOS put your OS's storage medium first in your boot order.You have a truly fast computer that's been set up for a very fast boot.This is purely hypothetical and technically OS agnostic, but I usually see issues like this suffered by Windows 10 users who have got truly fast machines and have turned on Fast Boot.
