I recently purchased a vizio 55 inch, 3-D capable, 240hz, interenet capable led razor egde lit TV two months ago, however, now my TV shows weird pixel distortions. They range from grey, black and green grainy pixel distortions on dark images as well as random lines and spots along the screen. Im not sure if it is my TV, being overused or its my cable box (COX) hdmi connected.

It sounds like it might be an issue with your TV itself. Does reseating the HDMI cable change anything? How about turning the TV on/off? Is this intermittent or does the problem persist constantly?

Can you post a picture/video of the problem?

Does the problem affect the TV's menu? If the TV's menu is affected, then we can be certain it is the TV itself.

This is likely a problem caused by a failure in the TV itself, as you should not have any problems caused by "overuse".