No internet connection but good DHCP
I am working a compter for a friend and I cant figure out whats wrong. I have the system hooked up to my router which is connected to my Comcast cable modem. The computer recieves all the proper parameters from the router (ip, subnet,dns addresses etc.) and I can ping the router, all the computers on my network and some addresses. When I try to visit any sites, I get the DNS error screen. I know my cable service works because I am on it through my laptop.
Some things I have already tried: I tried installing new a nic card. I used Adaware, Spybot, and Spysweeper (all updated). I used a registry fix utility and WinSockFixXp. Ive tried to access websites using both internet explorer and firefox. Ive tried starting the computer in safe mode with networking.
Any and all ideas as to what this might be would be most appreciated.