I just built a new system with an Intel Core i7 6700k, GIGABYTE Z170X Gaming 7 motherboard and a GIGABYTE R9 390 GPU. I also have a Samsung 950 PRO M.2 SSD (boot drive) Samsung 850 PRO 2.5" SSD and Windows 10 Pro.
I first got all the parts and built the system and everything worked fine. I installed Windows and began running burn in tests on the GPU. The computer was great. Then I received my Corsair accessories like my light bar upgrade kit for the Dominator Platinum DDR4, blue individually sleeved DC cable kit for the AX860i and a front I/O panel for the Obsidian Series 350D(it was for a USB 3.0 exchange on my 650D case).
So after I changed out front USB 3.0 port cables, swapped out all the cables running into the PSU, and changing the light bars on the DIMMs, I put it all together and I got nothing on the motherboard. The system wouldn't even start up. In fact, none of the LED lights on the motherboard worked. So after playing with some cables, I got the lights to work, but then the system would shut off and restart automatically. So I changed out the motherboard and GPU. I then put the system back together and it still wanted to reboot automatically. I then waited 2 weeks to exchange the RAM, but it still does the same thing. Finally, I just swapped out the Corsair H105 AIO cooler and still the same thing. All the lights come on, all fans start, the H105 looks like it's starting, but then after 5 seconds, it shuts back off.
At this point I'm wondering if the Isopropyl Alcohol I used to clean my beautiful 6700k killed it. So to recap, I'm not getting any video and the system shuts off and restarts automatically. Any help is appreciated.