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?

http://community.wdc.com/t5/General-Discussions/WDTV-FAQ/td-p/32135#sharing

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