Hi, I am having the issue with 6 3070 Gpus one goes offline after starting the rig for few minutes.
What CPU do you have? I once had that when I used a very basic CPU (AM3 non-Ryzen) and I was told it couldn’t handle all those gpus. I upgraded to ryzen 5 and it all worked again (it required changing the motherboard and whatnot… but it made sense at the time mining ETH)