jdhcon Posted February 9, 2017 Share Posted February 9, 2017 New build (1st time as well) with Asus Maximumus IX Code motherboard, Asus GeForce GTX 1080 graphics card and Corsair AX860i PSU. Motherboard powers up fine when GPU is not connected to PSU, but doesn't power on with GPU connected. Was using CableMod sleeved cables and switched to Corsair provided cables to see if problem was with cables. No luck with either cable. Appreciate any help. Thanks! Link to comment Share on other sites More sharing options...
jdhcon Posted February 13, 2017 Author Share Posted February 13, 2017 NVM - I was an idiot. Figured out the problem. Link to comment Share on other sites More sharing options...
Benson33 Posted February 14, 2017 Share Posted February 14, 2017 And so what was the problem? cablemod sleeved ? PSU ? Link to comment Share on other sites More sharing options...
jdhcon Posted February 17, 2017 Author Share Posted February 17, 2017 This is my first build so when I saw two power connections, I used two power cables to connect video board to PSU. When I opened my old PC, I saw one power cable with two end connections to video board. Guess the PSU has a fail-safe that shuts it down when installed incorrectly. Link to comment Share on other sites More sharing options...
red-ray Posted February 17, 2017 Share Posted February 17, 2017 This does not make sense. Many GPUs need two PCIe cables from the PSU to the GPU. Did you use a CPU power cable rather than a PCIe power cable? Link to comment Share on other sites More sharing options...
jdhcon Posted February 17, 2017 Author Share Posted February 17, 2017 Does it make a difference what type of cable to use? I had the CPU power cable already connected. The GPU has a six-pin and an eight-pin power connection. When I use two power cables to PSU, it would start and then shutdown. When I replaced with one power cable with multiple connectors, system powered up fine. This was the way my old Alienware PC had the GPU connected. Link to comment Share on other sites More sharing options...
red-ray Posted February 17, 2017 Share Posted February 17, 2017 Yes, at least I assume it does, but I have never tried to use the wrong cable. The ones for the GPU have PCIe written on them and for the CPU it's CPU. What each GPU needs varies from GPU to GPU so you would need to post links to the actual GPU specs for me to sensibly comment. Link to comment Share on other sites More sharing options...
jdhcon Posted February 17, 2017 Author Share Posted February 17, 2017 I recall the stock cables that came with the Corsair PSU has labels but not sure if the Cablemod sleeved cables does? I will check later when I get home. Thank you for giving me something to check. I have the Asus GeForce GTX 1080 8GB STRIX GPU (specs are at https://www.asus.com/us/Graphics-Cards/ROG-STRIX-GTX1080-O8G-GAMING/specifications/). Link to comment Share on other sites More sharing options...
Benson33 Posted February 18, 2017 Share Posted February 18, 2017 Be careful not to burn your graphics card, the 8 pin cable for the CPU does not work the same way as the 8 pin PCI cable for the GPU. For cablemod, to recognize the 8 pin cable for the CPU can separate into two 4 pins. And of course your cablemod must be compatible with your psu Link to comment Share on other sites More sharing options...
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