Model C7100 V

> how do I change my password

   _Which_ "my password"?

   Here's a radical concept which helps some people:

      https://en.wikipedia.org/wiki/RTFM

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.  Look for
"Types or Logins".  Further reading might not hurt, either.