Long story short, I am trying to run a DVI line through my basement. One of the cables seems to be giving me a problem, but I sent it back, it was tested, and deemed "fine". The parts I have are a Tower with DVI-I dual output. 2x DVI-D Single cables 1x DVI-I Dual cable 2x DVI couplers Monitor with DVI-D input The DVI-Ds coupled together work fine I have been told the DVI-I cable is fine ... but any combination I try that makes use of the DVI-I does not work. I just drew up a fantastic picture in paint for another forum, so maybe it will help explain the issue. http://s75.photobucket.com/albums/i301/simplydemented1/?action=view¤t=DVIIssues.jpg (wont let me post links because im new, theres a space in the htt p) I have been having issues with this for about a month now. Anyone have ANY idea why this wont work? I know digital signal fades after a certain distance, and this setup is about 30 feet... but I have read that I should still get a picture at that distance, it may just lose some quality.