A couple months ago, I upgraded my cable modem to DOCSIS3.0, and just yesterday upgraded my WiFi router. I also changed the WiFi security settings and went around to all my devices to make sure they were accessing properly.
The weird thing is that all of the network devices were able to connect and work properly except one laptop.
Dell Lattitude D820
Windows XP Home SP3
The wireless network card seems to be working properly in connecting to the network, as I can type in direct (numeric) IP addresses and see the router and modem, but this machine has no Internet connection. Under LAN & Network connections, there is no internet connection listed. So far, I've tried:
Tried to "Add a Connection" - still not showing an internet connection
Updated the Driver for the 1390 wireless card - now matches Dells most current version