Thank you for the confirmation. Kindly confirm the other question as well. Did you bring this PC to a local repair show previously and had a repair / OS re-installation?
It is possible that the image installed is KMS activated (crack version) that is why it is asking you to connect the PC to an organization network where the KMS activation server is located. Do you have a valid Product Key for Windows 10 Pro?
Sincerely,
Lee