OK, I’m a total beginner when it comes to anything regarding home networking so please bear with me. I just recently moved into a house a week after the previous residents moved out. The previous residents had internet up until they moved out and were using a specific coaxial cable in the house for internet. They were using the same one and haven’t had issues with their internet. They also had Xfinity internet since that’s the only one available for this house.

I moved in one week after they left and immediately got an account with Xfinity and got the necessary equipment. I also hooked everything up to the same coaxial that they were using but had no luck getting internet. There are also 4 other coaxial cables and inputs in the house. None of them were live. The previous residents have used one of the other bedroom inputs, and it worked for them.

Why would a coaxial cable no longer be live after only one week? Is this due to damage to the wiring? Also, why does this house have both coaxial cables coming out of the walls as well as coaxial inputs? Are there differences?

Also, I would prefer not to pay for a technician. Is there anything I can do to resolve this issue or is it better to let a technician handle it?