Here's some info that could help some of you with this issue:
My card (hynix) black screened about 6-7 times when I first got it. Most of the time it blacked out when I open up a new program or doing the windows performance rating in system. I think it went black twice during benchmark. I remember it did it once when I opened up GPU-Z and several times when I was surfing on chrome.
I started making list of all the things I can do to fix it, and somewhere along the line, the black screen just went away. I don't know if it's something I did or not to be honest.
Now that I think about it, it's most likely when I set all my PCIe slots to Gen3 (default was Gen2). Anything in BIOS with 'UEFI', I changed to 'LEGACY'. This was the first thing I did after trying out different drivers (Both black screened: 14.3 and 13.11 beta 9.5).
I didn't get any black screen after that. Not even during 4 days of overclocking my CPU and 3 days for GPU.
Other things I did (after black screen seems to have gone away):
1. Disable ULPS in regedit and Afterburner
2. Plug in extra 4-pin molex for PCIe on my motherboard (EVGA x79 FTW), (2x 8-pin CPU were plugged in also, but I was getting black screen with them from the start. So, I don't think that was the issue in my case)
3. Other things on my check list that I was going to try: Up VGPU core voltage, Set power limit to +50 or -5, up Aux (mem) voltage to +50 in Afterburner.
I'm running 4.5Ghz 4820K and my 290 is at 1119/1450 with +100 core mV, +50% power limit, and +13 mV AUX with no issue. Stock setting is fine as well. I'm using 14.4 driver as of now.
Hope this info helps some of you. Good luck. Edited by Purostaff - 4/24/14 at 11:09pm