I'm trying to change the default name on my Sky router but when I try a pop up from Windows security is asking for my username and password which I don't have as I never set one up in the first place! is this the default password from Sky, Admin- Sky that I need to use? Help please!
Could be. Perhaps your ISP has purposely locked you out to prevent changes, esp. those that might affect connectivity. Just depends on the ISP I suppose. If they supplied and preconfigured the device, and none of the obvious passwords work ("admin", "password", "12345678", <blank>"), then call the ISP and ask.