so your 7970 is the only PCI-e card plugged in? and you have 1 HDMI cable, and 1 DVI->HDMI cable each running into one monitor each right?, or are you saying you have one cable plugged into your motherboard graphics-out and 1 monitor being driven thru your 7970?
sounds like the wrong cable is being given priority, is audio coming "out of" EITHER cable?
also, check your device manager and make sure AMD Sound Device shows up...mine shows two b/c I have 2 7970's
also on mine, I notice that sometimes I have no audio...in which case I open my audio control program and make sure the default device is clicked and the sound kicks on
(I have a picture but its not letting me upload it)
adevmgr.JPG 150k .JPG file
Edited by flash2021 - 4/2/13 at 8:15pm