Remove the black electrical tape covering the black-and-white antenna cable. There will be 2-3 pieces of tape.
After the tape has been removed, close the laptop display, flip the laptop over, and disconnect the black-and-white antenna cables from the WiFi Card.
For information about accessing the WiFi Card, see the WiFi Guide here: Toshiba Satellite M45 Wi-Fi Card Replacement
Once the antenna cables are disconnected from the modem card, flip the laptop back over and open the display.