This may be your Network Connections service is disabled cause, view as follows: in the operation of ; ldquo ldquo; input window; services.msc; then, in the open ldquo service; ; service in the list on the right side of the window to find a name for the ldquo; Network Connections; service, to see whether its state is ldquo has started;.If not, then you need to set it to ldquo; you have started ;.