
I am running with a single PSU, Red squares are power connectors hooked up using the cables from the PSU (not the motherboard). Green box is GPU location.
Bios Version: 502
BMC Version: 2.1.24
X710 10G LAN: 9.4
Asmedia USB4: 1002
PD: 005
BIOS flags are slightly modified for things like IOMMU but even with defaults the behavior doesn’t change so those settings do not seem to be relevant to the issue.
The last Q-Code I get is AA but the screen remains black and input directly to the host is ignored afaict. The BMC is accessible and can do basic operations like power and reset.
What I am looking for is for those who can reliably reboot,
Versions
Bios Version:
BMC Version:
X710 10G LAN:
Asmedia USB4:
PD:
What power connectors are hooked up?

Did you use the PSU cable or one provided by the motherboard?
Where your gpu is installed and is it displayport || hdmi?
m2 nvme drives?
any other things that might be relevant, like did you have to tweak something in the bios?
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Had a lot of problems booting this board too. I changed the GPU slots and suddenly it booted reliably-er. The workstation runs 24/7 and rarely shut it down.
However I still I don’t trust it very much. Just days ago I switched 128GB of memory for 256GB and I needed to BIOS factory reset.
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Once I am booted into the OS the box is stable, and it powers on fairly reliably too. However I can’t get this thing to successfully reboot for the life of me. There was a small hope that the BIOS update 502 might have addressed it but after that came out and the issue was still not resolved, figure I would reach out.
I have tried changing the GPU slot but that doesn’t seem to elicit any change in behavior.
Do you have any of that other info handy? Like which power ports you have plugged in, what cables you are using, firmware version, etc?
Progress! So I decided to go back and re-read the PSU manual and came across this line. Thought to myself… erp erp… Ive seen that in the bios somewhere before. Went into the bios and flipped the bit and what do you know I can now reboot successfully.
Only thing that is weird is the display doesn’t work until the OS starts to boot.
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I’ve not updated my BIOS/BMC yet since putting the machine together earlier this year, but I can reliably reboot every day. If I’m not doing something requires it to work overnight, I tend to shut my PC down every night.
The only time I experience issues that require me to clear the CMOS is when sudden power loss occurs. Then it’ll get stuck on a 0D error until I clear the CMOS and it spends about 10 minutes retraining the RAM. This has only occurred twice, so if there’s ever a concern of a storm knocking the power out overnight, that’s another reason I shut it down in the evenings.
For the power pins, I’m using one of the 7 connectors up at the top to the left of the DRAM slots, the one right next to the LED code indicator, and of course the main ATX connector.
I also get an display signal within 3 seconds of hitting the power button, so I’m not sure what’s going on with yours. My GPU is in the same slot as you have yours.
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The weird thing for me is power on works just fine. Hit the power button, screen turns on, and it goes into the os. Don’t even that that CMOS thing. Though before I enabled ErP support for S4+S5 I could not reboot the machine for things like kernel upgrades or what not. It wouldnt even post anything to the display or through the kvm in the integrated ilom.
Still confused why its finally rebooting ok but the display still wont turn on till I get to the OS.
That is strange indeed. Every time I need to do a reboot for updates or software installation, it works like a charm.
If there’s one thing I’ve learned since building this machine is that no two PCs with even identical hardware with the WRX90 motherboard will behave the same. Wendell had just released his video on his woes with the Asus board three days after I made my order for my parts and I was nervous as hell about it!
In the end, the biggest initial hiccup was that I overlooked the sheer size of the motherboard and it didn’t fit into my initial choice of case.
One lingering issue is not being able to simultaneously run the 4090 with the Intel Arc A770, which I intended to use for encoding. I’ve played with resizable BAR and a few other settings and I just can’t get them to play nice with one another.
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Might want to double check to see if your setup is correct per the manual. There are some blurbs about multiple graphics adapters like.

Edit: I realize now posting this that having memorized the manual for this motherboard due to debugging efforts probably says something about the engineering quality of the board 
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Hmm, I’ll have to look. The weird thing is it’ll boot into Windows just fine, but the overall desktop experience is full of stuttering, with a lot of WHEA errors for the Intel card, with occasional freezes and straight up crashes, not even BSOD.
You know, I’ve been an Asus fan for as long as I’ve been building PCs, but the last few years have really made me question not only their integrity as a business, but also the quality of their products.
I feel as though I settled on one of their GPUs on this build as well since my preferred partner, EVGA, quit the GPU business.
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evga dropping out of the gpu business was the beginning mark of the shittification era we are in now for me personally.
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I agree. I still have two 980 Ti Classifieds in an old i7-2600K system soldiering on running Arch still able to do work and game.
I’m hopeful maybe they’ll come back, but I doubt it. I think investment to get back into the market would be more than they’re willing to spend, and I don’t see Nvidia changing their tune anytime soon either.
After months of reading manuals, rewiring, flashing bios, flipping settings I accidentally stumbled across the actual root cause. The fractal torret pwm fan breakout board that came with the case was doing something nasty.
Came across this discovery while I was wiring up my new watercooling setup. Facepalm. Anyways, something to add to my list of things to consider in the future when things are acting wonky.
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