i have Time Warner cable at my house and over the last few weeks i have had a very hard time with it. after having the modem changed 4 times i am wondering if the problem is not my router a linksys wrt400n. windows 7 is telling me "DNS server is not responding" when i am plugged into the router. however when i plug directly into the modem i get internet. is my router dead? or maybe needing a software fix? i appreciate the help as i really know nothing about networking.
Unless you or someone else has changed some DNS settings around, it very well could be a bad router and they are a pain to troubleshoot. I recommend contacting linksys customer support. Before I knew what I was doing, I would call them for help and they always pulled through.