1. Unplug the power cable from the back of the cable box and wait 30 seconds.
2. Plug the power cable back into the cable box; the box will reboot automatically.
3. Wait for the time or channel to reappear on front of the cable box and allow the services to reset.
4. Turn on the TV.
If you're a current TWC customer, you can also visit Current Services and Equipment within My Account to troubleshoot issues with your equipment.