I'm sorry about the issue. What's the model of your comcast / xfinity internet modem device?
Do you have wi-fi / wireless at home?
Please reply at the box below. Thank you,
Note: The internet modem device was usually given to you previously from your internet service provider, which is Comcast / Xfinity.
Please type at the box below, then click on the Send button below to communicate with me, so I can help. Thank you,