This is to help anyone that might find themselves in a similar situation to the one I was in last night.

My Components:

Ryzen 9 3950X

32GB Vengeance LPX DDR4-2666

Gigabyte RX 6600XT Eagle

Seasonic SGX-500 SFX

Aorus Gen 4 NVME SSD 1TB

​

I could not get this machine to post for 4 hours. I tried fiddling around with jumpers, CMOS, etc, but nothing ever happened other than CPU fanspin. The GPU fans would twitch on occasion, but no LEDs, no debug, no nothing.

My original intention was to use the 3950X to update the BIOS to P2.2 in order to support the 5600G that I intended to use in this system. After reseating the CPU, clearing CMOS a half dozen times, trying to find the CMOS battery and failing, swapping PSUs, swapping PSU cables, disconnecting front I/O, using 1 DIMM, etc., I found myself at an impasse.

​

I grabbed my personal X570-I Strix board and moved the 3950X, RAM, cooler, and GPU over to that board. It still wouldn't boot with a known good GPU, PSU, CPU, and board. That only left the RAM. I looked at the ASUS debug LEDs, and it was stuck on DRAM the entire time. I swapped the 32GB LPX for 64GB of Ripjaws V 3600, and it booted right up to BIOS at full XMP 3600MHz speed. The LPX RAM had apparently been burned at some point on the contacts, and was inoperable, and I never noticed because of the shadows from my case.

So if you have a no-post with known good components and no debug path, consider swapping RAM. It's probably the easiest thing to do, and Occam's Razor is often times true.