Invalid password and username

I have been trying to get from wdtvlive wireless into my computer and it keeps asking for username and password typed in every username and password I can think off I have 3 computer linked together One is Xp laptop and 2 Window 7 64 bit no problem with the laptop it connects no problem with one of the window 7 but the other computer window 7 does not recognize username and password it is listed in wdtvlive but cannot access it. I have tried everything they have suggested on this site and on google to no avail I am at the end of my rope . Any suggestions would be really appreciated

Welcome to the forums.

So you’ve tried all of this?

And you’ve made sure, in particular, that Windows Live ID Assistant is not installed on that Win 7 machine?