After removing the keyboard completely from the body of the laptop you will have a view of the WiFi card and other components of the inner laptop. (WiFi card labeled in picture 1 of this step section.)

After locating the WiFi card, the first step is to disconnect the the attached wires. (This is labeled in picture 2 of this step section.)

After disconnecting the wires, you can detach the WiFi card by pressing down on the clip that fastens the WiFi card located on the right side.

When you detach the card you will be able to pick the WiFi card up by sliding it out of position. Success!

You can now replace the WiFi card with another and reassemble the laptop.