Black box

A couple days ago I noticed every now and then a black box would flash on my computer screen for a fraction of a second, and I'd get tabbed out of any application I have open. It usually flashes about twice, and there seems to be no consistency on how often it flashes (anywhere from every 20-60...

Hey guys. I just bought a Sapphire dual-x R9 280X, mostly for mining, and I'm getting what I consider are high temps. First off, my GPU isn't with me in my computer, it's in a friend's. I bought this card thinking all would be well with a 600W PSU and.. I looked at the specs again, requires at...