I have a mining rig with 4 1080 TIs, Asrock H110, Celerion and 8Gb ram.

And i have gotten a really weird problem. I started this with a EVGA 1000 GQ PSU, runs very well. I wanted to add more GPUs to i bought a Add2PSU knock off (i assume) and another PSU, EVGA 1000 G2. After carefully connection everything and starting trying to boot up my main PSU goes "click" and just shuts off. I cant get it to boot. I disconnect the Add2PSU and tries again, it boots fine.

It looks like Add2PSU is faulty, but when i plugg in the new PSU, the G2 as the main PSU it will not boot. All cables has been dubble and tripple checked. Wont work. Okay, so maybe its busted? I get another PSU from the retailer, the same make and modell. I plug it into the Add2PSU and try again. Nothing, main PSU clicks and shuts down. I change places again, so that G2 is my main. Same thing. will not boot at all.

For the third time i buy another PSU, a corsair RM 650. I remove all GPUS and only have a SSD, CPU power and the motherboard connection installed on the motherboard. I try to boot - click! Nothing happens.

How could this be possible? the only PSU that works is my very first one EVGA 1000 GQ, i have tried 3 PSUs after that one and they all refuse to boot?

Have any of you guys been dealing with this sort of problem before?

All ideas are welcome. I really grasping for straws here!