Hello. I am at my wits end. I can see the TV, channels and everything as normal, but overlayed over the top and flashing around is 'Sorry, there seems to be a problem. To help fix this issue, please visit virginmedia.com/tvcode and enter your Error Code (7400).' To confirm: * It has been installed for at least 5 weeks; * it has been re-started several times; * It has been unplugged and re-plugged and re-configured several times. You can see the entirety of the TV channels, shows, everything works, just the error message is overlaid on top. Any suggestions? Huge thanks in advance!