Hello anyone can help me with this?
thank you

anyone?
maybe some boardview from any b550 asus by chance
or schematic
thank you

Так как выложенное фото очень плохого качества, измерений не сделано,с кем резистор соединен не определено,маркировки
чипа рядом невидно , то и ответ будет соответствующий:
Предположительно -
1)схему на эту плату можно ни найти никогда
2)Если чип это RT7267 и резистор идет на его 1-пин ,то резистор 200KOhm .
Но плата у вас на руках и может я не угадал.

hello thank you for answer
chip is unknown 2C marked and is for sure for DC-DC converter;
it receive 5V Vin and Vcc and resistor missing is on pin 2 to GND ;
pin7 is going to coil
IC has 5+5pins and gnd pad under it ;
pin3 receive 5V on it
(from internet images i think the resistor is something like X22 value (X= not known);
on my board is missing so i took an image from internet in first post (i can't find anywhere better image)
board is not booting ; it is missing cpu vdd and ram also
i suspect that this ic is for 2.5V but not sure; without this resistor i have 0.74V on the coil

Это и есть RT7267
Резистор с 2 пин 22KOhm .
Схему на вложении поменял. Проанализируйте снова.
Обратите внимание на формулы на схеме
Vout=0.765*(1+R1/R2)
2.5V=0.765*(1+49.9k/22k)

thank you very much

Hello after testing i have notice that 22k is not ok but 8.2k (822) is the required value to have 2.5v
After that card boot ok
Thank you for great help

hello i come back with one question
do you have any info about wifi board (it is not detected at all in the system) :(
drivers from asus installed for wifi and lan (lan =ok)
thank you
i did remove it and reinserted it still nothing (not detected in device manager)