I have a Dell Latitude E5400 laptop running Window 7 Ultimate w/ SP1(32-bit). I have a Netgear WGR614 v6 wireless router. I can see the SSID and the laptop connects to it but it's not getting a usable internet connection. When I go into Network setting and click on Repair, the Windows Network Diagnostics comes back with: "Problem found: The DNS server isn't responding." I tried plugging in with an Ethernet cable and get the same result.
I have an iPad and a MacBook that both connect to the Wifi w/o a problem, so issue must be on the laptop. And I also booted the laptop with a Knoppix Live Linux CD that was able to connect via Ethernet.
Also, I have used this Dell laptop at another location connecting via Wifi to a Airport Extreme and that works fine.