The Interwobs and Routers go hand-in-hand, but many times one refuses to function and must be fixed. There is not much you can do about the Internet (it is kept up by a nifty robot that travels all around the world), but a recently found web-page offers you the default admin passwords/user names to many (if not all) routers. It is informative, and possibly helpful if the need arises, and if a client has not changed their router's default settings.
Default Router Passwords
Thank You For Your Time.