I can't get into the BIOS, what's the problem?

Question

BIOS

I can not enter the BIOS, as well as BOOT MENU, etc.
As expected, when turning on the PC, I press the necessary key (DEL - BIOS, F12 - BOOT), but as soon as the motherboard splash screen disappears, Windows (v.10) starts to boot.
The problem is clearly not that I'm pressing the wrong keys, because on the splash screen is a mat. The boards are all indicated, and there were no problems before.
After the first attempt, I decided that the problem was Fast Boot. It was enabled, disabled, but the problem remained (after I checked again that it was indeed disabled).
All keys work, also checked.
The last thing I decided to try was to press all the keys that are possible.
There is no result.
I never mocked the BIOS ...
Gigabyte GA-H67A-D3H-B3 board (rev. 1.0)