Hi can this be used instead of my main talktalk router that is no longer in use due to being broke? If so could you provide a video of how to connect it up to my LG OLEG tv please? I have been struggling all day trying to put in the password it's given me in numbers. I have no idea how to do this which I was told it's straight forward but I'm not well up on technology. Please help if it can be used instead of the damaged router.