"No audio output device is installed"

this is a longshot but do you know if an SLI bridge interconnect would work with two ATI HD 5770's Max? no one around here has a Crossfire cable and XFX are being little bitches and not responding to my tickets.
 
yeah thats my thinking too, lol this sucks i think if i threaten XFX that i'll return it maybe it will stir them to at least respond to my ticket, cause right now i have a useless card.