Question Aorus X399 Xtreme RGB's not coming on and won't POST

[imswitcht]

I was diagnosing some RAM problems when in between restarts of going from 4-6 sticks the Mobo failed to POST and RGB lights stopped coming on. There is also no signal to the monitor and attempting a Qflash from a USB drive has been unsuccessful as I am unable to see anything on monitor. I've tried reseating CPU and RAM sticks multiple times (with nearly every possible configuration, going all the way down to 1 stick). CPU doesn't appear to be fried, no scorch marks of any kind. I've removed all peripherals and basically rebuilt the PC to no avail. I used the Bios SW to run from secondary BIOS option, no changes. Reset and Cleared CMOS, even removed CMOS battery for 10 minutes with power supply unplugged from wall and MOBO. CPU Boot Light stays on and DRAM flashes once every 25 seconds or so. MBios or BBios lights up depending on Bios SW position. I did detach a case fan that wasn't working as well during this process but reconnecting didnt seem to have any effect.

Spent all of yesterday troubleshooting, please help!

Build is:
1950x threadripper 3.4ghz 16 core
aorus x399 xtreme eatx str4 mobo
EVGA XC geforce gtx 1660 ti 6gb
noctua NH-U14S 82.52 cfm cpu cooler
g.Skill flare x 32 g (4x8 GB) DDR4-2400 CL15
Samsung 970 Evo 1 TB m.2
Samsung 979 Evo Plus 1 TB m.2
Corsair Graphite Seriies 760T ATX Full Tower
Corsair Rm1000x 1000w 80+ Gold Certified ATX Power Supply

 

[Lutfij]

Welcome to the forums, newcomer!

According to your motherboard manual;
https://download.gigabyte.com/FileL...1001_e.pdf?v=6fbfd58a9197ff8e47055550bfb4677b
page 17, you should populate slots DDR4_8_2D, DDR4_7_1D, DDR4_6_2C, DDR4_2_2A, DDR4_3_1B, and DDR4_4_2B

What rams did you add to the 4 you had initially?

If you have access to a CH341A BIOS programmer tool you could reflash the BIOS chips with the latest BIOS version found off the support site for the board.