Had the same issue. Seems to be a signal monitor. I re-sited my computer stuff upstairs from downstairs & get very poor signal strength. This shows on the two blue screens when clicking on. It will often say "signal strength poor". I will often get a yellow "X" over the screens which shows (by the same click on) that "limited Access" is available. With the red "X", it will often say (you got it, click) "Networks are available". You are then invited to reconnect to your network. It does appear to do it's own thing by restoring access when a decent signal is obtained.Lastly, with two red "X" , my kid, often impatient, switches everything off, re boots( pulls plugs out & pushes back in again and then reverse order switches back on the computor. Everything fine ! Blimey, reminds me of flying the A340 !