Hello guys!
So, I have this problem: I added a new VGA (an R9 390) to my rig, and my PC simply does not detect it. The card is connected to the power source (with a 6 PIN), so it should be getting enough power, but it simply does not display it. I have already tried the following: I checked BIOS VGA priority, and it was on PCI (not internal graphics), so that should be OK. I checked whether the power source was strong enough (I put the CPU and motherboard on a seperate power source and put the VGA on my proper, 500 W model), but it didn't help either. I also made a run with my old relic, an ATI x-600, just to make absolutely sure that the power was enough and the same thing: it was producing heat, but didn't show up in the Device Manager or GPU-Z. So I ask you guys, what else should I try?