SandManTFCHi All,Hoping someone can help me please. The GTX 1080 worked fine up until a week ago, windows wouldn't detect it and wouldn't boot up on start up. Now by replacing the 8 pin gpu connecter cable with a 6 pin connecter cable - the white GPU lights up and I can see it windows device manager, but won't boot up. I have tried, Different PSUSeveral different 8 pin and 6+2 pin connecters - PCIE (All GPU none CPU)2 different cards in the PC and works fineAlternative PCI slotsI am lost now but not given up as I don't understand how it will show on windows device manager, but do nothing else. All fans works, white light with 6 pin.