Need help with modem throwing error Dynamic Range window violation. Believe error to be causing modem to reboot numerous times throughout the day. What does it mean and how do i get it resolved?

Signals look pretty good, so it might be an intermittent problem. Check your interior coax connections and replace the interior coax with RG6 or better if it's old or if it's ever been kinked. Make sure connections are tight. A slightly loose connection lets in a lot of noise.

Cox often likes to say it must be a bad modem and you need to replace the modem, but I don't agree with that. Modems do go bad but not nearly as often as Cox likes to think. If you replace the coax and tighten all connections and the problem continues, you will probably need a service call.

they tried telling me yesterday that it must be my modem. I replaced it about 2 weeks ago thinking it was the problem. I'm thinking my old one wasn't bad and i replaced it for no reason. Is there a way to tell if the current coax is rgb6 just by looking at it? I know ethernet usually stamps the what type it is on the outer coating, i don't work with coax much. Thanks for the help.

Most RG6 coax is marked with RG6 on the side but not all of it. It's a cheap thing you can try replacing. Also make sure the connections are really tight. If that doesn't help you should call support. You might need to talk to a few people before you get someone who understands the issue. Don't use chat support for this. They can't see the full details of your modem.

the screen grab of the log i took last night shows both a T4 and a T3 timeout. Is this something that will require a technician to fix?

It depends on what's wrong. Post the signals and the logs here. Not as a screen grab but as a copy/paste.