We are having problems in our building - internet access on only two of our ten computers on the first floor. No internet access for computers on the second floor. Second floor computers can map to the network. The computers on the first floor cannot map to the network.
I brought in our phone service provider to check the router leading out to the internet - he says everything is ok with the router.
I have re-sent every switch in the building; re-started the network - no luck. What else can I try? We have cat5 wiring.