il try doing the freq thing... my psu is a bitmain 1600w i thought the io board was the one causing the issue... so if i nerf the freq to 600 or less and it works, then it means the psu is bad? not the io board?

i did all tests ur telling me about testing the hashing cards they are all fine and my s7 is batch 8. ty for the help lets see if it fix the issue