Full System
Mobo: Z97X Gaming 5 GIGABYTE
Proc: G3240 Intel 4th gen pentium dual core
SSD: 120 GB kingston
RAM; Kingston 8 GB DDR3
PSU: Corsair Rm 1000i gold 80 plus
GPU-s: 3 X RX 480 (1 in PCIEX 16, 1 in PCIEX 8 and one in a Riser)
Edit: All cards are on stock settings, nothing modified.
Edit: Now the mobo doesn't turn on anymore, I guess it was a defective unit ?
If you have a paperclip you can test your PSU. This way you can identify if PSU is bad or mobo. Have a look at following video.