Crossfire just stopped working

[Evantaur]

i just happened to look at my gpu usage while i was gaming (was wondering why i was getting such bad FPS) and i noticed my second card is not doing anything, just sits at 0% usage and it used to work just fine last time i checked

when i start valley bench.. it jumps to 30% for a while, then drops to 0 and never move again

tried with 13.3, 13.4 and 13.6 beta drivers, reinstalled windows, card is not broken since it does just fine in E@H

running out of ideas here :S

edit: cards in question are 7970s

[CrazyNutz]

Are you running the valley bench in full screen mode, and is crossfire enabled in catalyst?

[Evantaur]

Are you running the valley bench in full screen mode, and is crossfire enabled in catalyst?

DOH!

ran it in windowed mode... didn't even realize works ok now