This happened to me in Australia when i applied dsl. I don't know where ur? each adsl account only allow 2 users. That means whateven how many comps connected together in the network to share internet connection. Only two of them can surf the web, the third one will receive the same message"this page can not be display" but all the rest still may receive mails from outlook, hotmail, etc....Try to contact your ISP about ur problem, as u said the configurations of both ur laptop & comp are all identical.