can the card be seen under windows device manager? i have a similar situation but my card is no longer visible under device manager... haven't troubleshooted it yet but probably failed..
Hardware:
MSI 990FXA-GD80, 8GM RAM, AMD Athlon II X2 3.4GHz, (2x) Sapphire Radeon 7950, Seasonic 1000W PSU
Software:
Windows 7 Pro-x64
CGMiner 3.1.0
CGMiner CMD Line:
cgminer.exe --scrypt -o <pool url> -u <user> -p <password> --shaders 1792 --gpu engine 1020 --gpu-memclock 1575 --temp-target 75 -I 20 -w 256 --lookup-gap 2 --thread-concurrency 21712 -g 1
From the beginning I have not seen greater than 610 kh/s per GPU with an average around 575 kh/s. I thought I would let it run for at least a day or two in order to establish a stability baseline then start playing with some of the settings to try to get it higher; however, After only a few (6-8) hours GPU1 goes SICK and then eventually DEAD. Only happens with GPU1.
Current WU: is ~1100
HW: 0 on both cards (although didn't notice if there was anything during the DEAD period)
The temperatures never climb above 80C and are usually closer to the target of 75C (+-3C)
GPU0 has a monitor attached
GPU1 doesn't.
I have a total of 4 Sapphire 7950s that I bought to put in the MB, but I wanted to try with two first and then ramp my way up. the actual card identified as GPU0 never stops mining at a 575+ rate; however, the card identified as GPU1 always goes sick and dead within a few hours. Up to now I had been using the same two PCI-E slots, but this last time I took the same card that went DEAD the last time and put it in a different PCI-E slot. I'm currently waiting on the results, but I figured I'd ask because maybe someone out there can see something in my settings that is causing it regardless of which PCI-E slot it's in.
Any ideas?
on edit: I have swapped out the card identified as SICK/DEAD with the other two cards I bought to make sure it wasn't a bad card, but have gotten same result so far