I believe you misprinted the Corsair RAM MEMORY Part number. You probably meant this one that is listed on the Motherboard's QVL List: https://dlcdnets.asus.com/pub/ASUS/mb/socketTR4/PRIME_X399-A/PRIME_X399-A_memory_QVL_For_2nd_GenRyzenThreadripperCPU.pdf…
CORSAIR CMK32GX4M4B3200C16 ver 4.31 32GB(8GB*4) SS 16-18-18-36 1.35V ● ●
Also your Asus Motherboard has a very recent update to both your BIOS and AMD CHIPSET: PRIME X399-A Driver & Tools | Motherboards | ASUS USA
Version 08072018/08/105.62 MBytes
PRIME X399-A BIOS 0807
Update AGESA 22.214.171.124 Patch A to support AMD 2nd Gen Ryzen™ Threadripper™ processors
Version 126.96.36.1992018/08/29398.33 MBytes
- AMD Chipset Driver V188.8.131.52(package 18.10.20) for Windows Win10 64bit---(WHQL).
Updating the BIOS and CHIPSET will make the Ryzen CPU more compatible with your Motherboard and hardware.
Does any of your Motherboard Trouble LED are lit besides the Q-codes? https://dlcdnets.asus.com/pub/ASUS/mb/socketTR4/PRIME_X399-A/E13889_PRIME_X399-A_UM_V3_WEB.pdf?_ga=2.68552343.72280157.1… (This the PDF of your Motherboard Manual)
Make sure you have at least the 8 Pin CPU Power connected on the Motherboard if not both 4 & 8 Pin CPU Power connected:
When you power up the computer do you hear any extra or abnormal Beeps?