Originally Posted by ORL
Have you tried swapping the PSU out yet? This does not specifically point to the motherboard without testing that first. Its possible the PSU isn't applying proper power to the PCI-E systems or to the GPU itself and the motherboard is simply reacting to this.
I didn't consider this because everything else works... atm I have no ways of trying a new PSU without buying one
Originally Posted by pgdeaner
I had a bad 8 pin modular cable that caused this issues once. Doubt it's the mobo. Try a different 8 pin connector to feed power to the video card.
I can test this, yes
thanks both of you!