R8000--need to reset password

> I need to reset my password

   What's stopping you?

   _Which_ "my password"?  Visit http://netgear.com/support , put in
your model number, and look for Documentation.  Get the User Manual (at
least).  Read.  Look for topics like "Types of Logins" and "Specify
Basic WiFi Settings".  Further reading might not hurt, either.

> just got a new TV [...]

   Not a very detailed description of that device.

> [...] and cannot set it up

   "cannot" is not a useful problem description.  It does not say what
you did.  It does not say what happened when you did it.  As usual,
showing actual actions (commands) with their actual results (error
messages, LED indicators, ...) can be more helpful than vague
descriptions or interpretations.