Just been going crazy trying to log on to my netgear router using the defaul passwords which are:
Password: password or 1234
non of these worked and was just about to go down the factory reset route, then I remebered it is on Virgin, and after a bit of trawling I found they use:
so typed them in and bang it worked ,
Hope this works for you, if not then look around the router for any clues.