Hi! I recently bought a bunch of new computer hardware but, having put it all together, it won't work. Also, having pulled it apart to get the basics to work... well, it still won't work.
Processor: Intel i5-6600K
Fan: Coolermaster Hyper 103
Motherboard: Gigabyte Z170-D3H
PSU: Corsair CX500
Nothing else is connected at the moment; not even RAM (though, I did try powering with RAM - no dice).
It turns on, fans whirr, LEDs light up, but this only lasts for ~8 seconds before powering down again. I've tried another PSU, so I can rule that out. I've tried another motherboard/cpu/fan setup in the case, so I can rule that out.
I've tried about 10 times to reseat the motherboard, but always get the same result. I've tried reseating the fan and CPU, but still get the same result. There are no bent pins on the CPU socket, and I haven't had the smoke of doom come out from the CPU. I've looked up the manual for the motherboard, but it has no troubleshooting tips. I'm all out of ideas, so if you have any, please let me know!