Bottom line up front: moved into a new apartment. Same internet company and speed. My roomates and I decided to buy a modem instead of renting one. It's a surfboard 6151. The TC I have is the older model that I put a 3TB HDD in. So now the movies and tv shows load slowly or not at all, whenever we try to get our Xbox Ones on it we get a DCHP error. Also my iphone 4, MB Pro and Mac mini connect fine but a windows laptop, iphone 5 and iPad 2 do not connect. Is it finally time to retire and upgrade the time capsule?