|"Wizard says LAN card disconnected. The device manager says device is working properly."|
Both can be true.
The first mis-quoted message indicates Windows isn't detecting the LAN adapter is connected to anything.
E.g. it has to be connected via a network cable to a standalone high speed modem, or to a standalone router, or to a combo router / high speed modem, etc., and the device it's connected to must be powered on, the led for the network port on both ends of the connection must light up when the computer is running. Don't plug the network cable into a port lavelled WAN on a router or combo router / high speed modem.
Also, some computers have more than one wired network adapter. You'll get the message for the network adapter that isn't connected to anything.
If you're trying to set up a wireless network connection, e.g. to a ,standalone router, or a combo router / high speed modem, say so.
You may or may not need to use a network cable to help you get the wireless network connection working.
Once you have the wireless connection working you can disable the message for the wired network port, or disable the wired network adapter in Device Manager.