It seems that for a short period of time sometime somewhere in the past there was a connection between the Laptop and the Router, that why you have traces of Mac and IP.
Try to reinstall the drivers and do it while the Laptop is few inches from the Router.
Wireless basic Configuration:
Install the drivers on the Client Computer (follow the Wireless card instructions).
After installation check in the OSs? Device manager to make sure that every thing is OK, and there is no conflicts or and ?Ghost? Installations
(The big Yellow Exclamation mark is BAD).
MS Zero Configuration was not devised for Entry Level consumers Hardware, it is better to be set Off.
Put the computer with the Wireless Client close to the Wireless Router.
Disable all software Firewalls (including Windows ICF).
Make sure that the drivers are set to infrastructure mode and obtain IP auto.
Make sure that the Router does not have any MAC or IP filtering on.
Router's DHCP On. (Static IP will work too if set correctly.)
Disable WEP on both devices.
Set the SSID and channel of the Router and the Client card to be is same.
When you achieve Stable Wireless Connection you can set Filters Firewall etc.
When every thing is set move the Wireless Client to it intended location.
If it becomes Unstable or you lose connection than you have a distance problem.
In such a case this might help.
Link to:
Extending the Distance of Entry Level Wireless Network.