I've had the r9 290 for a long time now, it worked fine on ultra settings and all but I decided to connect my old monitor which was just lying around (my monitors aren't the same, could that be the issue?) I connected it with a passive hdmi to dvi and it works for around 5 minutes or so and then both monitors go black and I have to turn my computer off as there is no other way to. This doesn't happen when I have one monitor connected so I'm confused? Do I need an active adapter? Is the card not getting enough power? Is it the drivers(14.12)? Idk. so yh...