Month old PC, No post, half second of fans then nothing. No beep codes. Have tested.

pyrotechnic

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Sep 1, 2011
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I'm at a complete loss of ideas.
Everything was working fine for about a month. I had come home from work and PC wouldn't wake up from sleep mode, so i hit the power button to restart it manually but it wouldn't turn back on. The fans turn on and light up for about half a second then immediately stop. No beep codes.
Below are the steps i have done.
1. I immediately thought it was the PSU, so i purchased a new one and switched it over. No luck, returned it.
2. Next i purchased a new mobo and switched it over. No luck.
3. I tested the RAM individually and confirmed that they were in the correct slots. No luck.
4. I replaced the CPU with a new one. No luck.
5. I verified that the only standoffs touching the board are the ones holding it to the case.
6. I removed the GPU and no change.
7. Verified that the power connectors are fully connected. To the GPU (both), the 16 pin to the board, and the 8 pin CPU connector.

Below are the components in the build, none of which are more than a few months old.
PSU:
EVGA SuperNOVA 750 G2 80+ GOLD, 750W ECO Mode Fully Modular

1'st mobo:
MSI Computer ATX DDR3 2600 LGA 1150 Z97S SLI KRAIT EDITION

2'nd mobo (switched to): MSI ATX DDR3 2400 LGA 1150 Z97

RAM:
Kingston HyperX FURY 16GB Kit (2x8GB) 1866MHz DDR3 CL10 DIMM - Black

GPU:
EVGA GeForce GTX 970 4GB SSC Gaming ACX 2.0+

HDD:
WD Black 1TB

SSD:
Samsung 850 EVO 250GB

CPU:
Intel I7-4790k

Case if it matters:
Sentey® Gs-6008 Plus Stealth Gaming Computer Case