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Reddit
reddit.com › r/homelab › h12ssl-i stuck at bios pci bus enumeration 94
r/homelab on Reddit: h12ssl-i stuck at bios pci bus enumeration 94
October 26, 2023 -

Long story short the iommu setup wasn't idea on my board so I did a bios update to see if it would split things up better and since the update it's just sitting at the boot screen with the dxe--bios pci bus enumeration 94. It's been about an hour now so I know something must be wrong at this point. Also when in the ipmi it still lists the old firmware as being on the board.

Any ideas?

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Supermicro
supermicro.com › support › faqs › faq.php
FAQ Entry | Online Support | Support - Super Micro Computer, Inc.
May 27, 2022 - Question 120U-TNR issue : Server keeps on rebooting after displaying "DXE-BIOS PCI BUS Enumeration 94" DEL key has no effect.
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Reddit
reddit.com › r/homelab › x11sdv-8c-tp8f - stuck on dxe - bios pci bus enumeration code 92
r/homelab on Reddit: X11SDV-8C-TP8F - Stuck on DXE - BIOS PCI Bus Enumeration Code 92
April 17, 2025 -

Hello, I got 2x SuperServer E300-9D-8CN8TP with X11SDV-8C-TP8F motherboards from my work place. I found some AC adapters that power on the device and now am troubleshooting them. They startup and go to "DXE - BIOS PCI Bus Enumeration" with a code of 92, it stays there and then reboots. I plugged in the ethernet cable to the IPMI port in hopes that I could do something from there. The BMC got the ip 192.168.1.152. If anymore information is needed I will provide it to the best of my abilities. Thank you.

tldr: Does anyone know how I could get passed DXE - BIOS PCI Bus Enumeration Code 92 on a X11SDV-8C-TP8F?

After this part the system will restart. The right label is IPMI, when I go to 192.168.1.152 it asks for a username and password. I put the username as ADMIN and the password as 002590B8FDE9 but that doesn't work. I don't see any other place that lists a password for IPMI. Top down view of the E300-9D-8CN8TP with X11SDV-8C-TP8F motherboard

Edit: So I got 32GB DDR4 ECC RAM and with that I was able to boot and get into bios. There are other issues involving code 79 but that will have to be a different issue.

Thank you for your help!

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Supermicro
supermicro.org.cn › support › faqs › faq.cfm
FAQ Entry | Online Support | Support - Super Micro Computer, Inc.
June 15, 2020 - Question C9X299-RPGF With i9-10900x,install a V100 GPU in slot1 or slot7, hear 5 short beeps during POST, and screen hang at 94, "DXE:BIOS PCI bus enumeration"
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Reddit
reddit.com › r/supermicro › pci bus enumeration
r/supermicro on Reddit: PCI Bus Enumeration
August 20, 2022 - When it boots, it gets stuck on DXE--BIOS PCI Bus Enumeration...
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VOGONS
vogons.org › viewtopic.php
Error code 94 on pci diagnostic card \ VOGONS
January 18, 2021 - Yes, I did omit one Voodoo step "do the little chicken-dance, run around the house and let out a little shriek three times", I didn't think it would make a very big difference though 😉 Regarding USB, you could also try booting without any USB devices and see if that helps. These are somehow UEFI related issues, but I don't know the actual root cause. Caps are not to blame in this case. I’m not entirely sure what uefi is tbh. But I remember a few settings in the bios about it.
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Reddit
reddit.com › r/homelab › boot issue with supermicro e300-d9
r/homelab on Reddit: Boot issue with Supermicro E300-D9
December 19, 2021 -

Got a SP E300-D9-4CN8TP brand new from Newegg.com and it's stuck at booting time with code DXE--BIOS PCI Bus enumeration 92. It reboots after ~10sec at this point. It's doing this with no storage attached and only one RAM module attached. I can't access to the BIOS neither. I have tried all I could imagine including reset CMOS and acceding using IPMI getting same result. Very poor experience for an almost 1K mini server. Idk what I'm missing here.

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Overclock.net
overclock.net › home › forums › amd › amd motherboards
Asus Dark Hero Q-CODE 94 impossible boot | Overclock.net
April 25, 2022 - As I told you, it may be the Pcie controller of the processor, the best is to check in a computer store to see if it comes from the CPU or the motherboard. Since you no longer have a choice, try updating the bios on the usb bios flashback port ...
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TweakTown Forums
tweaktownforum.com › forum › tech-support-from-vendors › asrock › 51203-asrock-extreme-4-stuck-at-error-93
Asrock Extreme 4 stuck at Error 93 - TweakTown Forums
DXE Initialization (PCH module ... 8F - OEM DXE initialization codes 90 - Boot Device Selection (BDS) phase is started 91 - Driver connecting is started 92 - PCI Bus initialization is started 93 - PCI Bus Hot Plug Controller Initialization 94 - PCI Bus Enumeration 32 95 - PCI ...
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Tom's Hardware Forum
forums.tomshardware.com › home › systems
[SOLVED] - New mobo and cpu won't boot | Tom's Hardware Forum
April 17, 2021 - If you can't get into the BIOS in this configuration then start looking at your PSU, CPU, and GPU as the culprit. ... Well the manual says 94 is PCI Bus Enumeration and 0D is 'reserved for future AMI SEC code errors'. Since your testing points to memory, have you tried your RAM in a different system?
Find elsewhere
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GitHub
github.com › tianocore › edk › blob › master › Sample › Bus › Pci › PciBusNoEnumeration › Dxe › PciEnumeratorSupport.c
edk/Sample/Bus/Pci/PciBusNoEnumeration/Dxe/PciEnumeratorSupport.c at master · tianocore/edk
// if we can find something, it means we are in the 2nd round of enumeration or the device has no rom image · // else we should try get it from Configuration Table. ... PciIoDevice->PciBar[BarIndex].Length = PciIoDevice->PciBar[BarIndex].Length | LShiftU64 ((UINT64) Value, 32);
Author   tianocore
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Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Boot issues I've been having. | Tom's Hardware Forum
February 10, 2015 - The Hero has 2x PCIe x 16 slots (marked by the red colour) can you try putting your GPU in the second PCIe x 16 slot and see if it works? ... Hi there, Q-codes 94, 96 does indeed sound like your GPU (I'm unsure what AE is trying to say though), considering the fact that the Q-code description tells something about the PCI slot in which your GPU is normally placed in.
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OCAU Forums
forums.overclockers.com.au › threads › computer-not-getting-past-post-screen.1268214
SOLVED - Computer not getting past POST screen | OCAU Forums
Hi all, i got a headache for ya. System Specs: Intel i7 7700k Nvidia GTX 1080ti Gigabyte Z270x-Gaming5 Samsung 960EVO SSD Samsung 500GB 850 SSD 2TB...
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GitHub
github.com › xCuri0 › ReBarUEFI › issues › 265
Boot-loop (sometimes) a few times on BIOS PCI Bus Enumeration · Issue #265 · xCuri0/ReBarUEFI
January 4, 2025 - System Motherboard: Supermicro SuperServer X10DRU-i+ BIOS Version: 3.5 04/27/2022 ("X10DRU2.427") GPU: PNY Nvidia Quadro P4000 Single-Slot, Sparkle Intel Arc 310 Low-Profile CSM is turned off. 4G decoding is enabled. UEFIPatch is applied...
Author   xCuri0
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TrueNAS Community
truenas.com › forums › truenas scale › operation and performance
Degraded disk replacement problem: boot hangs after clearing CMOS | TrueNAS Community
March 10, 2023 - ​Problem statement TrueNAS Scale alerted me one of my drives was degraded. I offlined the drive, powered down my server, and replaced the bad drive with a new one. When I turned on my server, it hanged with message DXE PCI Bus Enumeration 93. I cleared CMOS, then restarted the server and was able to get as far as the BIOS.
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Reddit
reddit.com › r/buildapc › asus dark hero q-code 94 impossible boot
r/buildapc on Reddit: Asus Dark Hero Q-CODE 94 impossible boot
April 24, 2022 -

Hi guys I have a pretty serious PC problem so I hope some of you can help me. A few days ago during a shutdown Windows hangs on shutdown by switching to a black screen that leads the PC to a loop of blank reboots terminated by a direct shutdown of the PC using the power button. Subsequently, the PC was no longer able to boot, not even reaching the BIOS, the boot phase stopped with the motherboard with q-code 94 corresponding to the "PCI Bus enumeration" phase and the VGA led lit and then the boot retries automatically without ever reaching the BIOS and showing no video signal at all. Last night, two days passed (after trying various cmos, reboots and removal of power to discharge the capacitors) the PC randomly boots and resets a Windows error. Everything works perfectly (tested with cinebench r23, Crystal diskmark and some games) and even turning off and on again no problem of fate. After hours of use, convinced that everything had been resolved, I turn off the PC again and Windows freezes in the same way, bringing the PC back to its previous state. Today I tried for 6-7 hours to overcome this continous boot loop with constant code 94 and no video signal on the screen, but i wasn't able ti solve it and I have no idea how yesterday the PC managed to post. I suspect or a software problem of corruption of the BIOS due in some way to Windows or some hardware problem of the motherboard maybe, even if in my opinion the problem is really illogical and difficult to understand and appeared suddenly. Right now I have tried to remove the battery of the mobo, tried a boot without the nvme with the os, but I have not tried yet to move the video card to other slots or such solutions as the system is cooled by a fairly complex double custom loop which takes time to take apart.

If anyone is able to help me I would be really grateful.

PS: we are talking about a really high-end rig (5950x, Asus dark Hero, 3090, ax1600i) each component cooled with custom loop

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Nutanix Community
next.nutanix.com › how-it-works-22 › new-kb-articles-published-on-week-ending-march-5-2022-40658
New KB Articles Published on Week Ending March 5, 2022 | Nutanix Community
March 6, 2022 - KB 12776 - NX Hardware: Node hung at DXE--BIOS PCI Bus Enumeration · KB 12789 - Era - Linux operating system pre-requisites (/tmp and /dev/shm directories) KB 12793 - Foundation - Cluster create failure for new HPE DX nodes and AHV hypervisor · KB 12795 - Windows VSS snapshot failed with VSS shadow copy Service error: The security ID structure is invalid ·
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CFD Online
cfd-online.com › Forums › hardware › 247483-sm-issues-h12dsi-n6-2.html
SM issues H12DSi-N6 - Page 2 -- CFD Online Discussion Forums
February 8, 2023 - There is an amibios post code manual on the SuperMicro website. The one I found is applicable to boards up to the X11 generation. Not sure if there