I will start by saying that i dont know if im allowed to post in english but i will give it a try.
I have a Asus Z490-F that dosent have any Vcore, from what i can tell from the asp1900b and its schematic i dont think it gets any P_Vcore_Enable signal, i have tried looking for mising components but nothing.
I have tried 2 different cpus, updating the bios using the flashback feature.
The board gets 24pin power and know when the 8pin cpu is plugged in, and starts up but no debug leds start up. The ntc6798d and the pch get barely warm.
Any ideeas? What to measure or what other info to include

Are the +VCCIO and +VCCSA voltages present?

I am not sure since i dont have any kind of diagram to see. Is there any way to tell where i can find it on the board?

brusli009 If u have a tester, u could measure em. Is there any supply voltage on the chokes from bottom side of mobo?

I have measure it and there is nothing coming from the chckes under the cpu socket. I also got another z490f (no cpu atm) and it has vcore with no cpu installed amd also have the vccio and vccsa under the socket at @1.06v