I don’t speak russian, sry if it’s already mentioned.
You can have max 13 display outputs. Your igfx on the CPU counts as one. So disable it.
The rest of the cards have to be headless mining cards.
It also matters which slots you put the cards WITH display output.
The manual (avail on Asus website) has schematics on how to install which cards & where depending on the types you are using.
Make sure to check it because 11 of the slots do NOT take nVidea cards under any circumstance.