Error ZCASH thread exited with code 46-77 ewbf Nvidia

[tangamer]

I have Error with code
ERROR: Looks like GPU 0 are stopped. Restart attempt.
How do I fix it?
I try to run with one card and then crash.The other 5 cards work normally.If this work is to reduce the oc and set the fan to 60 degree Celsius.
If set to auto, it will stop working and crash immediately.Another 5 automatical fans, including oc, and it works fine.I try to switch riser and can not solve the problem.