Hi,

I have the same problem with Sapphire R9 290 2x also BSOD, and blackscreen issue's.
The BSOD issue didnt occur lately anymore although (because i dont open the browser anymore) i still get the black screen as soon as it needs to do some work or it crashes when opening MSI afterburner.
Also after a few hours mining the second card crashed and the first card kept on mining, and they use the exact same settings 25500 TC Worksize: 512 Intensity-19. (830-850 khash each)

The rig setup is as following.
CPU: AMD Sempron
RAM: Kingston Hyper X 2 x 4GB
MoBo: Asrock 970 Extreme 4
GPU: 2 x R9 290 (sapphire)
PSU: Aerocool Strike-X 1100 Watt

Im using as mining program GUIMiner, and as OC software MSI Afterburner (Core clock: 1000  Memory clock: 1375 Fan 70%)

I've been told that Linux BAMT works better than windows with the R9 290 graphics card.
Maybe that is something to give it a try.

Can someone try to take a stab at the problem why the second card fails after a period of time.
Because it has ran perfectly the several days and yesterday evening i did a reboot on it and started the mining process.
And today i connect to the machine and i see the second CGminer only has 560 shares and the other card has 5k + and still mining.
Also when i started it again without a reboot it couldn't get higher than 150-160 khash.


AMD CCC 13.11 installed stock drivers from sapphire.
Tryed several other drivers without success with drivers not even detecting the graphic cards.