Hi Alreusch, welcome to the Cox Forums! We know that our customers live busy, active lives. That's why we offer 24/7 technical support via phone, online chat, email, Twitter, and Facebook. Is there a splitter on the coax connection to your modem or cable receiver? A dying splitter might cause the symptoms that you described. Check each of the connections to the modem and TV to ensure none are loose or damaged. Replace the splitter and see if you notice an improvement. If the issues persist, please let us know. A service call may be needed, and my team can help you schedule an appointment. We offer service calls 7 days a week, so I'm sure we can find a time slot that is convenient for you. -Becky, Cox Support Forums Moderator