I mean when i plug in on mobo only 10 gpu-s. All 10 works without problem, but when i add 11th gpu and start rig , rig sometimes start only 9 gpu , 7 gpu, sometimes 11. I try EtOS and SMOS...its same
I read somewhere that these could be os problems, try pimp
I'm sorry, what exactly did you change? Did you used the molex or not? When i read your writing is kinda confusing to understand.
One of the reasons can be that your risers are shorting. On that mobo they are very close and sometimes can touch and short each other. I use electrical tape to insulate them and have no problems.
1) not my first post here on the subject, kinda middle of discussion. Yes connected molex to the mb.
2) do you have any substance to the shorting claim? cause I'm yet to find one pair touching each other(though maybe its just good soldering), but the main point is: it seems that the biggest bumps are the ground.