Network connection but no internet connection

I've got a Dell Latitude C640 running Windows XP Pro. It has an Intel 2200BG wireless mini-PCI card installed. It was working until yesterday. Now it will see and connect to the network and even get an IP address but there is no internet connection. I can ping my own IP and the default gateway, and all test pass in the Intel Manual Diagnostics Tool. I spoke to Dell about the issue and was given instruction on how to reset the Winsock catalog, which also didn't help. I also tried swapping out the mini-PCI card with another one and the problem remained.

I would think the problem might not be with the computer, but I have a Compaq Evo N620c with a Compaq W200 WLAN card on the same desk and it has no issues.

I'm confused now. Any help is greatly appreciated.

 

Try and restart your modem/router by unplugging it and repluging it in to the wall.

 

try pinging yahoo.com (ping yahoo.com). And ping 66.94.234.13 to see if your gateway is working.

My guess is that you do not have DNS servers.

Run ipconfig /all from the dos cmd window and see if your are getting DNS servers. if the same as your gate way your not.

A side note. If this is new and you only had your desktop pc connected with the router, you may need to clone it's MAC address into the router. Most ISP control access by some means, MAC address is the main one that cable companies use and some DSL's.

 

I'm actually at college and trying to connect to my school's network so there isn't a cable/DSL modem, and I don't have access to the router settings for obvious reasons. It is showing two DNS servers, neither of which have the same IP as my default gateway or computer IP address.

 

That sounds like it's getting the needed info. How did the pings go to yahoo and 66.94.234.13 .

Most schools direct you to a login page, in order to use their networks. Most require you to register your MAC address with them. The other thing would be your Firewall.

 

It cannot ping either of those sites. My school's system does have a login page but I can't even get to that nor can I ping it. As for a firewall I'm only using the standard Windows XP onboard firewall, and disabling it makes no difference. However I can access the login page using my other machine (though that machine is already logged in so that may make a difference).

 

Try a loopback ping to your NIC 127.0.0.1 this will tell you if your card is working correctly -- sending and receiving.

 

It does that with no issues, and passes all of the Intel wireless card diagnostics.