I have been running steady for about a week now. However, the problem that persists is I have 2 cards when I disable/reenable them 1 gives me error code 43 and wont mine. The other gives artifacts and restarts the computer. When the computer comes back on it is disabled I reenable it and it mines without hbcc memory. I jave been running both of these without hbcc memory and pulling around 1400 h/s each But all my other cards are 1900+ so I should have additional 100 h/s but can't figure out why these won't work. I am also not sure how to identify which card is which on the machine versus in device manager.
You can identify a serial number next to the PCI slot, which will probably say 1 or 2. You may also want to try uninstalling the drivers and reinstalling.
http://vega.miningguides.com/p/faq.html#GPUorder I did a fresh install of windows a couple days ago to see if it would fix the issue with the disable/enable. As for identifying a serial number what does that correspond to in the properties window of the gpu? I am on a H110 BTC+ motherboard.