Sounds like you are viewing the Slingbox internal tv tuner on your laptop and the cable box signal on your tv. With the Slingbox Pro-HD, you have two viewing choices on your computer. If you have it hooked up correctly, you can view the internal Slingbox tuner or you can view the cable box. You should have coax from the wall to the Slingbox, coax from the Slingbox to the cable box, and HDMI or component from the cable box to tv. You should also have component, S-video, or composite from the cable box to Slingbox.