I just solved this. I did a lot of things so I'm not sure about what exactly was the thing that worked.
I updated all of the controllers via driver booster. What was weird about this is that even if the chipset controller stated that it was updated it stated also that it was from 2009.
I reboot and nothing happened. Then I got into MSCONFIG again and deactivated the start off processors (it only counted two). Saved, applied the changes and then reboot the PC.
I have done this before but it never worked, however, when the PC turned on again there were all of the 4 processors showing in the task manager and basically everywere for the first time and all of them working.
I think that probably it worked this time because of the updates but I still have no idea of what just happened
I hope this is useful for someone else.
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In Ryzen Master that should be set to 0 cores, with it set to 2 you are disabling two cores.
I know, that was the actual setup. When I turned the option to 0 it showed a message that stated "The stopped cores quantity is lower than the actual and cannot be applied. Energy cycle is required" and there was no way to apply that.
I already solved it and posted how but my message is still being review by a moderator.