Definitely sounds like a bad Cable Card. I know these things can be frustrating. I live just down the road from you, close to Kingsport. I wasn't given the option of self-install. The installer was super-nice, though, and very patient. He was here over three hours before we got everything up and running. Next, you'll want to get an eSata external drive to expand your space. Stay away from the Cavalry drives. I went through two of those before getting the Seagate DB35/Antec MX-1 combo everyone here loves. Four days counting and no errors or GSOD's! We're up to 16 HD channels now with our Charter package.