Why won't BIOS boot in Asus laptop, but Windows loads?

Question

ASUS

Notebook ASUS VivoBook X571GT-BQ037. The BIOS started to work strangely, before everything worked fine: if I press F2, it shows a black screen and does not load anything. At the same time, Windows is loaded if nothing is pressed.
Can you suggest what could be the problem?

Answer 1

As a result, I took it to the service, they flashed the BIOS under warranty and everything became normal.

Answer 2

No external monitors? Then it's strange ... very)
Unless ueffi is loaded

Answer 3

you need a bios flashing, this is probably the most obvious