Just ordered a Rog strix x570-e gaming to pair with my 5900x (both purchased at MSRP). My question is, with my current RAM, Corsair Vengeance LPX 3200mhz (CMK16GX4M2B3200C16) 4x8GB, will I run into boot issues? I noticed 4x8GB isn't supported for this RAM on the QVL, however, my current build, an 1800x paired with a Crosshair Hero VI, has no issues running in this configuration, although I did have to slightly overclock the RAM

I guess, more or less my question is, is anyone else running with this board, cpu, and 4x8 RAM that isn't supported according to the QVL?

Hi all,

I know that there are a number of these posts out there dating back years, but I've been bashing my head against a wall after trying to troubleshoot this for weeks.

My computer won't post with my memory A2 & B2 slots. I can run with RAM in A1, A2, or A1 & A2, but the second I try to run in A2 & B2, my mobo shows 0d and yellow LED light by the DIMM slots. I currently run my ram in A1 & A2 just fine. Before I go further, here are my specs:

CPU: AMD Ryzen 9 5900x
MOBO: ASUS ROG Strix X570-E Gaming ATX Motherboard
BIOS: v3801 (have tried a few different versions)
RAM: Corsair VENGEANCE RGB PRO 32GB (2 x 16GB) (CMW32GX4M2E3200C16)
Cooler: Cooler Master Hyper 212 RGB Black Edition
PSU: EVGA SuperNOVA 850 G2, 80+ GOLD

Not sure if there are any other relevant parts here, but happy to provide as needed. So far, here's everything I've tried:

• Swapped to new motherboard (same model)

• Purchased new RAM (same model)

• Confirmed compatibility of RAM and mobo

• Tried RAM, one stick at a time in A1 and A2 slots (RAM works fine, tried with all 4 sticks of RAM)

• Tried old DDR4 RAM I had laying around (same result as new RAM)

• Reseated CPU and cooler

• Loosened screws holding cooler

• Checked all PSU cables

• Cleared CMOS (both by removing battery and shorting)

• Went from XMP -> manual timings in bios (multiple timings tried)

• Verified multiple times that there are NO bent pins on my CPU

I know there's the obvious of trying a new CPU, but those are a bit hard to come by. I suppose I could buy an older CPU just to test, but it seems to me that a number of these issues I've researched, both new and old, are with AMD CPUs. Part of me thinks (and hopes) that there's some setting in BIOS that I've overlooked.If there's anything new I can try, I'm all ears.

Troubleshooting Help:

What is your parts list? Consider formatting your parts list.

PCPartPicker Part List

Describe your problem. List any error messages and symptoms. Be descriptive.

Whenever I install a memory module in slots 3 or 4, the PC does not boot. Only slots 1 and 2 work on the motherboard where I can actually boot to Windows 10. The PC detects both RAM modules (both in BIOS and windows 10 when is slots 1 & 2)

List anything you've done in attempt to diagnose or fix the problem.

Initially, I had this issue at the beginning of the build to which I loosened up the CPU cooler which seemed to have done the trick but it has now reverted to not working again.

I have checked the following;

1. Reseated the memory.

2. Put the memory modules in the working slots and ran Windows Memory Diagnostics - no reported issues on either stick.

3. Updated BIOS to the latest version.

4. Took off the CPU Cooler and checked the CPU, no bent pins on the CPU nor any visible issues with the socket.

5. Reseated the CPU (after inspection above).

6. Removed the CMOS battery.

7. Inspected the RAM slots (although I am not sure what to be looking out for here -visually, it looks ok)

Post relevant photos of build/parts here.

N/A for the time being.

Provide any additional details you wish below.

I am having a hard time trying to narrow down where the issue is, it could be three of the following;

 1) Bad motherboard.

 2) Bad memory controller on the CPU.

 3) Bad RAM.

I have tested each RAM module and no errors were reported so that can't be ruled out? I don't know how I can test the first two theories. I do not have extra parts around to troubleshooting further. I have noticed that the Windows memory Diagnostic tool does not complete when slots 1 and 2 is populated, however it does when there is only one module.

I am hoping by posting here to get some new information and new set of eyes to investigate this further. I have run out of ideas to try.

Appreicate the help.

Regards,