Connected but no internet (Windows XP, both ethernet and wireless)

Try disabling one of the connections, sound silly but it worked for me... My wireless was connecting to the network but the internet was not working. So I checked all the network settings, used ipconfig /release & /renew, Made sure passwords were correct, etc... I had a hard time believing it was failed drivers or updates as I have not done any auto updates since my last connections. My laptop is used for work so I'm constantly assigning new addresses and connecting to different networks. However I get home and it won't let me connect to my home wireless. I checked my Mac book and of course no problems whatsoever.. but my dell was NFG. Finally I disabled the ethernet connection. This disabled the internet connection for a few seconds and then restarted the service. I was then able to connect to the internet over the wireless.

Hope this helps.

Limited or co connectivity

Have a look at the link below:

Limited or co connectivity

This will help for sure