New XB7 Modem

Hello, 

Need help asap. My laptop was connected to my previous xfinity modem. I recently just got a new one and neither xfinitywifi nor the wifi account under my name is appearing. It wont even pop up, only works on my laptop if connected by ethernet. I have also restarted the modem and every other single device in my house connects. The network name is not even appearing on my laptop.