Were there any other symptoms leading up to the issue, or did it just disappear one day? If you're using risers, obviously try putting it in a known working slot with a different cable, or directly, without any other cards in the system. I haven't had any just disappear, the defective cards typically will make it so the system will not boot up at all until I disconnect the card, or I will get artifacts on the screen if that one happens to have a monitor attached (usually found when I individually test the cards to identify the issue as mentioned above).
Very interesting. For me I have had 2-3 GPUs die now and none of them prevented booting or had artifacts. In each case the card simply stopped working altogether. Windows doesn't show a display adapter in the Device Manager and there is never any video provided from the HDMI (or other) ports.
This one died right after that riser burnt out. I'm not sure if the GPU issue caused the riser issue or vice versa. My assumption would be that the riser burning out killed the GPU. I've tried it in all the other slots and I have other GPUs to verify the slots and risers all work. The GPU just doesn't show up at all.
On to my hash power drop on certain machines, I looked at the log and thought I saw a dynamic switch for a command line, but I was mistaken, so I'm not clear on why I'm getting a hash rate drop on a few cards on different machines. The odd part is that I can reset them and it will be full speed for a minute or so before it drops again. In to the space to troubleshoot tomorrow... Only so much you can do remotely on something like this.
Let me know what you find and if there's anything I can tweak in the app to help with this. Looking forward to the feedback.
