I have a strange power supply issue that I am in some serious need of help to resolve. I've spent quite a bit of time researching it with no resolution. I have an Ethereum mining rig that uses two power supplies, a corsair AX 1200, and a Seasonic 1250 Gold PSU. I have it connected via a dual power supply adapter. In order to get all 5 GPUs to show up in windows, I had to plug the seasonic power supply into the main 24 pin, and the corsair into the secondary 24 pin slot. This ran just fine. I had it running like this for several days until about 2 days ago things went haywire. The machine shut itself off, and several hours later I went to investigate. I tried swapping the seasonic to the secondary PSU adapter and the corsair to the primary, and this allowed the machine to actually post. The seasonic psu was drawing zero watts from my killowatt meter, and only the 3 GPUs which were plugged into the corsair PSU were showing up on the device manager. Eventually I took the Seasonic power supply out of the machine, plugged it into a different computer where it started up just fine, then I plugged it back into the machine and everything ran fine. This worked for about a day. Then today, the thing turned off again. I went out to investigate and just like before, the seasonic power supply was only drawing about 3.8watts of power. I am going to try plugging it back into my other machine tomorrow to see if it will fix it, but I really need a solution for this. I can't keep unplugging it and plugging it back into the other computer. Does anybody have any ideas/solutions for my problem? I am thinking (however unlikely it is) that maybe it's the PSU adapter that's causing the issues? Because they were running fine for several days, and then this stuff started happening. I'm really in need of some help, hopefully one of you TPU members will know how to fix this. Thanks Also, I have the CPUs plugged into the corsair PSU, which is plugged into the secondary adapter, and 3 of my GPUs with it. The other 2 are plugged into the seasonic, and the only way for those 2 to get registered was by plugging it into my main 24pin adapter slot (not the secondary one).