petri[.]com/how-to-use-the-windows-recovery-environment
A generally useful rundown on how to use the recovery environment to repair or reset Win10, it also includes a few maybe useful tips, ways to get into the BIOS settings instead of using a hot key or special switch during a power on startup.
That said, in case of disaster you'll still need to use that hot key to get into the BIOS settings to boot from say a Macrium Reflect USB stick so you can restore a backup, assuming you have one. Resetting Win10 rather than using a backup can work, but it can take longer and also fail in my experience.