I was eluding to that fact. I waited till i got a response saying that it was an individual that the PC was bought from. In this case it certainly sounds that the version of Windows that was installed is not Genuine and is in fact a pirated version. It sounds as if they modified some files to prevent you from going to Microsoft sites so that they dont try to do updates and see that the version is not valid and you get prompted with that lovely response "You maybe a victim of piracy".
I would confront the person and get the facts. Cause they modified the system to prevent you from going to these sites for a reason.