Asus Strix z790-E, 13700K, 2x16 Trident Z 6800, 3060TI, Win 11, dual monitors

Just got this put together last week, everything appears normal, XMPI profile enabled and seems to be running at 6800.

But after boot to windows, everything normal and seems to be running as expected, the q-code keeps jumping back and forth from 30, 31, and 32. Does this right after boot, without going to sleep. Been watching it for 5+ minutes after normal boot, still doing it.

Is this normal? I thought once the computer was booted up, the q-code should should be stable at A0 or something.

I'm trying to get my brand new ASUS ROG Crosshair X870E Apex to POST, and I’m stuck at POST code 31 with CPU Q-LED solid on. There’s no display output at any point.

My Setup:

• Motherboard: ASUS ROG Crosshair X870E Apex

• CPU: Ryzen 9 9950X3D (also tested 9800X3D)

• RAM: Tried multiple DDR5 kits

• GPU: 4090 Discrete GPU installed

• PSU: Corsair AX1600i 1600W, known good

• Cooling: Custom loop

What I’ve Tried:

• Cleared CMOS multiple times

• Updated BIOS via Flashback (successfully completed)

• Tested two CPUs (9950X3D and 9800X3D)

• Multiple RAM kits, both slots and one stick at a time, all known-good

• Stripped system down to only CPU, one stick of RAM, PSU, and GPU

• Checked socket pins carefully – looks clean

• Tried Retry, Safe Boot, LN2 Mode, and Slow Mode – no change

• BIOS Flashback LED blinks and completes as expected

• Q-LED behavior: DRAM LED is on during memory training, then goes off; CPU LED comes on and stays on

• POST code always gets to 31 and then stops

At this point, I’m thinking it’s a bad board, but hoping someone here might have a fix or see something I missed before I RMA.

I need help this is the first time that this happens to me I build a new Pc with a 13900k and when I boot the Pc everything works fine but que Q code is showing random number I goe up to the 80-81-82- 27 - 28 this is crazy I’m getting crazy

Update: it was the bios set to display the cpu temp the board it’s fine :)

Just put together a new build: Asus z790 hero motherboard Trident z5 16gb 6000 (36-36-36-39 1.35v) i13700k (windows 10 pro 64bit) Aorus master 4090.

2 sticks of ram boot fine. I try 4 sticks and I end up with memory error codes and a blank screen. Xmp 1 profile set. All drivers up to date in asus aurmor crate app. I can interchange any 2 sticks so theyre all in working order. Computer just doesnt want to boot with 4, even in safe mode or bios.

Any advice would be appreciated. Im running out of troubleshooting ideas at this point.