Two Dell wireless pc's won't connect to the internet. Wired devices okay. Other wireless devices okay. Not getting a valid IP from the V7610. Have spent almost one whole week working on it. Laptop complete software re install to factory. Uninstalled Windows 10 went back to original factory settings on Windows 7. Still no luck. I am pretty certain it's something in the V7610 - the DNS refuses to give me an IP address. The network card accesses the V7610 but gets no valid IP. Any suggestions before I commit suicide? Everything was fine before we went to the NBN and were forced to use a new router.