On one rig with 4 rx470 cards, SSD got messed up. I have put it in the other rig to test it if it's working (previously I pulled out the working SSD from this rig).
SSD is ok, but now both of my rigs are messed up. I have reinstalled drivers (tried different versions too), I updated windows (it's windows 7), but I only get 10mh on ethereum per card.
I have another rig with the same 4 rx470 cards and is working fine. I used Macrium to clone this SSD from good rig to two that are not working properly.
I got the same result (10mh per card). I don't know what happened.
I use win 7, tried with some other miners, but I got the same results. Virtual memory is good.
Should I try to BIOS MOD the cards or something?
Did you update drivers?
I did the update from the old blockchain driver and hashrate took a dump, so it looks like amd took away the ethash fix.
Could be wrong but that seems to be the issue as if I point hash to different ethash chain then it mines at the normal rate.