I have a Dell inspiron laptop about 18 months old running Windows 7. I have had a problem sporadically for the last 2 months.
I will be using the internet when all of the sudden my browser can't open any web pages. Then I see the icon in the system tray that says limited or no connectivity, despite the signal being perfect and there aren't any other routers in the immediate vicinity to interfere. When I try to run the windows Troubleshooter it says I am connected to the network but that the router cannot access the internet. However, if I disconnect from the connection and reconnect, the connection works fine.
This happens every hour, or sometimes even every 5-10 minutes. and I just disconnect and reconnect and it works fine.
Also, I have several other devices that continue to work while my laptop displays limited or no connectivity.
I don't think it is a firewall issue (I use AVG Free and Windows Firewall).
I found this question which suggests setting up a continuous ping to the default gateway. When I do this, the pings return fine until I get the Limited connectivity icon at which point it states "request timed out".
I am pretty sure it doesn't have anything to do with IP conflicts either.
How can I troubleshoot this problem? Any suggestions?