One gpu keept crashing after some time so i replaced the riser and now the os crashes into these two screens.  Sorry for bad picture quality it was impossible to get a good shot at the screen.




From what i understand there is a watchdog error with the cpu and it is timing out for 22 sec. The second one is something about polaris 10 voltage, assuming this is the gpu since it has polaris bios. Also had other screen i didnt get picture of stating there was a voltage leak but it was not patched


All i find online is about the psu being bad or to much oc but this happens with the cards at stock too. Its only one of the cards, atleast it was before i replaced riser. Now i dont know since it goes to other screens right after the same gpu crashes, I can see its hashrate decrease and then it goes to the screens in link.

Have anyone else had this problem? 
All cards are flashed the same way and have been running same clocks for days stable

Setup
ASRock H110 Pro BTC+
4 Sapphire Radeon RX 570 8GB Nitro+
Evga 1000W psu
Cheap risers from ebay 

Sorry if this is wrong place. I couldn't find any gpu subforum under altcoins
Can't delete this post so hoping i mod will fix my mistake 

I have a rig of 5 rx 570 nitro+ 8Gb cards that i have bios moded with polaris editor. 2 of them are stable at a hashrate of 23.3Mh while the other 3 sometimes run on 21Mh, jumps in voltage and eventually crash to 0Mh, it can take 30min to several hours.
core 1340 mem 2150
Running them on stock clocks is 20.5Mh and seems to be working fine (going on 3rd hour)

On my nvidia rig mem clock was king gaining 5mh overclock, but on the amd rig mem clock gain only 0.5Mh while core clock gains 2.3Mh

Bios mod, lower voltages and clocks they said... leaving me confused as that only lowers my hashrate on amd cards  
my good old r9 290 4Gb did 31Mh (core +100 mem +450-500) not that long ago, my 1070's does 31Mh now.

Im using Ethos on my rigs

What in the heck am i doing wrong with these amd cards?