dissabled features

I've got a notebook that was previously being used by a business. When I try to change the lan setting I get a message that I'm not allowed and to check with the admin. Any help with this would be greatly appreciated.

 

Go to Start\Run and type in Regedit and press Enter. In the left pane, navigate to this Key [folder].
Hkey_Current_User\Microsoft\Windows\CurrentVersion\Policies\Network

In the right pane, delete these items if they exist.
NoNetSetup
NoNetSetupIDPage
NoNetSetupSecurityPage
NoEntireNetwork
NoWorkGroupContents

Exit and reboot.

Note:if not at the above Key, then look here.
Hkey_Local_Machine\Microsoft\Windows\CurrentVersion\Policies\Network