Just a word of caution, I woke up to 1 dead R9-290 this morning after mining scrypt-jane, the card was only 1 week old.
It may just be coincidence but If you look back through this thread a few people using the same card have noticed problems afterwards.
I've managed to take mine back and have traded them both for 2 r9 290x's now.
If they show up "DEAD" it doesnt actually mean that your card is broken, you know that right?
Means it has been unable to function, so CGMiner stops trying and calls it DEAD.
Mostly it's because of insufficient power, but there are some other reasons for it...
Try lowering the intensity a little bit, or if u have underclocked your GPU add like 0.010 VDDC to it.
Anyways if ur card shows up DEAD, just restart your PC and start mining again
No the card was dead as in not working anymore will get thrown in the bin. I tested it and the place where I bought it from tested it when I took it back.
My PC wouldn't power up with the card in it's slot and power is not a problem I have a 1000w seasonic and 2 cards only pull around 630w full system.