New PC build - not starting up when pressing power button

[lazernerd]

Parts List
PCPP: https://pcpartpicker.com/list/KgL7kT
CPU Cooler (not listed in PCPP) is LEPA NEOllusion RGB.

Description
When I plug in the PC and turn on the PSU, I see the RGB on the motherboard light up so I know it's at least getting power. If I unplug the 24 pin ATX power cable, that lighting stops so that cable appears to be working correctly. When I press the power button on the top front of the case, nothing happens at all.

Troubleshooting Steps
- Re-seated the CPU, confirmed no pins look to be bent.
- Tried using one RAM stick - no change.
- Re-seated both RAM sticks - no change.
- Confirmed HDD_LED and PWR_SW connectors are connected properly per the MOBO manual.
- All the components from the front panel of the case are connected (either to MOBO or PSU).
- Multimeter detects short when power button is pressed when connecting to PWR_SW connector.
- Had two others take a look at it as well to no avail.
- Tried plugging one of the fans that came with the case directly into the MOBO - same issue.
- Tried using a known working PSU (used that PSU's cables) - same issue.
- Tried shorting the two PWR_SW pins with a screwdriver - same issue.

Pictures
Motherboard: https://imgur.com/a/pyglb

Additional Details
The GPU has not arrived yet so it is not currently installed.

Any help is much appreciated! I'd really love to get this build up and running.

 

[alexoiu]

Try testing the board outside the case, only CPU and CPU cooler installed, both 24 and 8 pin power cables connected. No other wires, fans, components. Short the 2 pins and, if still no go, then I'd RMA the board.