Hi everyone!

Today I received an older PC from a friend of mine. I picked it up, he showed me that the PC was working and then I took it with me in the car. When I arrived home, I connected it to a monitor but it didn't display anything. The motherboard displayed a Qcode 0d. When I start the PC, it starts with Qcode 3f and quickly switches to 0d, where it stays.

Relevant software and hardware I am using: Motherboard: ASUS ROG Crosshair VII Hero (WiFi) Video card: Geforce GTX 1660 ti armor 6g oc Processor: AMD Ryzen 7 2700x eight-core processor Hard drive: Samsung ssd 860 qvo 1tb RAM: Corsair DDR4 Vengeance LPX 16GB (1x) Power supply: Corsair RM750x

I have already found and tried some things on the internet. The conclusion was that it often was either the RAM or the motherboard. What I have tried:

• Putting the RAM in other slots. When I received it, it was in slot B1 and it worked there. I tried the three other slots.

• Trying my own PC's RAM in the slots.

• Trying my own PC's dual RAMs in slots A1-B1 & A2-B2.

Conclusion -> the RAM is not broken.

• Verified that no cables were loose or pins were bent. This was not the case except for the pins of the USB 3.0 ports of the case. Without these, the PC should still start, right?

Conclusion -> all cables are properly connected, the graphics card and power supply both work in my PC.

• Verified that my CPU is compatible with the motherboard -> it is stated on the Asus website that this is the case.

• Verified that my RAM is compatible with the motherboard -> this was not stated on the Asus website as far as I could see.

• Flashed the bios using a USB stick, reset the CMOS and used the reset button on the motherboard.

My conclusion so far is that it is either the combination of the RAM and the motherboard or the motherboard is defective. The strange thing is that it still worked at my friend's place. Could it be that something went wrong in the car or did I do something very stupid when I connected it?

Are there any other solutions? How can I verify that this is indeed the correct conclusion and what would be the logical next step? Buying a new motherboard?

I'm curious about your thoughts.

Best regards,

CoachCrowd

Hi i was building my pc and when putting everything together the pc wouldnt boot up for the first time just lights and fans and theres a solid light on next to the dram (orange ish) on the qled. I thought it was a ram problem so i tried it on my brothers system but that worked on his so i know it wasnt ram not functioning. I decided to try them each one at a time and then in either slot and still nothing ive checked to see if the ram is compatible CMT16GX4M2C3600C18 and asus says it is.i presed the clear cmos and reset button on the motherboard too to no avail. I have tried using hdmi instead of dp direct from the gpu but no signal still and due to the parts shortage issue i will probably struggle to get a replacement as i am now 9 days over scan uk's replacement period as itt took so long to get my gpu and cpu that i settled for a 3060ti and 5600x and i know that the cpu can definitely support my ram oc speed

Any help would be greatly appreciated before i try and battle for a replacement.

Yesterday I had used the XMP profile to get my RAM to first 2666 mhz, then 2933 and lastly 3200 mhz (My ram is the G.skill RipJaws V FA-3200-14CL GVR).

It had run an entire day with about 2 - 3 restarts due to software installion.

Then I turned it of and went to bed, today when I came home from work, It just wont boot...

It wont ever go past QCode 0d, which some say is DRAM fault, but I have tried swapping the dram to every single slot, with every single stick (2 sticks of 8gb), and nothing changes it.

What I've gathered its bricked, but i had heard that shouldn't happen on BIOS 0902.....

Anyone else that experienced this, and is it bricked?

I tried bios flashing it, doesn't change a thing.

I can't get into bios or anything...

Hello all,

Let's get to the point!

THE ISSUE

20 days ago I assembled a new PC (specs below). It worked fine, got great benchmarks, ran games perfectly (4k, ultra options, etc.).

On Friday 15/01, I turn it on, log into my Windows session, go grab a drink and come back to a crashed PC which no longer boots, not even to the BIOS. As a side note : I don't have any pets, nor any one living at home with me, so this happened on its own.

At first, the MoBo indicated a Q-Code of "22", which I understand to be a RAM-related error. By the next day, the error code had become - and remains to this day - Q-code "0d". Also, the small led light for "DRAM" error, right under the Q-code indicator, is lit (to be precisely, it lights up the instant I turn on the PC).

So, as of typing this: when I turn on the computer, the Q-code briefly flashes to "10" (a normal booting up phase I understand), then switches and stays stuck to "0d" with the DRAM led lit. The computer won't boot at all and I have no access to the BIOS at all (black screen). The "DRAM" Led lights up as soon as the computer is turned on.

Also, in case it matters : my RAM sticks are RGB. When, in the first evening, I had a Q-code "22", they would still light up (although the computer wouldn't post). As of Q-code "0d", they no longer light up, at all.

MY SPECS

PCPartPicker Part List

• CPU: AMD Ryzen 9 5900X 3.7 GHz 12-Core Processor

• CPU Cooler: Noctua NH-D15S chromax.black 82.51 CFM CPU Cooler

• Motherboard: Asus ROG Crosshair VIII Hero (WI-FI) ATX AM4 Motherboard

• Memory: Crucial Ballistix RGB 32 GB (2 x 16 GB) DDR4-3600 CL16 Memory

• Storage: Western Digital Black SN850 500 GB M.2-2280 NVME Solid State Drive

• Storage: Western Digital Black SN850 2 TB M.2-2280 NVME Solid State Drive

• Storage: Toshiba X300 4 TB 3.5" 7200RPM Internal Hard Drive

• Video Card: MSI GeForce RTX 3090 24 GB GAMING X TRIO Video Card

• Case: be quiet! Dark Base Pro 900 Rev. 2 ATX Full Tower Case

• Power Supply: Corsair HXi 1200 W 80+ Platinum Certified Fully Modular ATX Power Supply

• Optical Drive: Asus BC-12D2HT Blu-Ray/DVD/CD Writer

• Operating System: Microsoft Windows 10 Home OEM 64-bit

• Software: Microsoft Office Home & Student 2019 - 1 Device Software

Generated by PCPartPicker 2021-01-20 08:21 CET+0100

I run Windows 10, 64bit.

As of the time of the crash, I was using the following BIOS (which was the most up-to-date, non-beta one as of assembling the PC): Version 2702, 2020/11/24, ROG CROSSHAIR VIII HERO (WI-FI) BIOS 2702

Final possibly relevant note : I have not overclocked anything, except for enabling DOCP in the BIOS to get my RAM to its normal 3600Mhz speed.

TROUBLESHOOTING

I have tried the following steps :

• Took out both RAM sticks, and tried :

  • Stick 1 alone in all four slots. Q-code "0d" in each case (RGB stays unlit).

  • Stick 2 alone in all four slots. Q-code "0d" in each case (RGB stays unlit).

  • Sticks 1 and 2 together in A2*/B2* and A1/B1 configurations. Q-code "0d" in both cases (RGB stays unlit).

• Flashed the MoBo to the newest non-beta bios : Version 3003, 2020/12/07, ROG CROSSHAIR VIII HERO (WI-FI) BIOS 3003

  • Retried the RAM with it, issue remained.

• Purchased and installed new RAM: HyperX Predator RGB - 2 x 16 Go (32 Go) - DDR4 3600 MHz - CL17 (note that this model is specifically on ASUS's QVL)

  • Exact same issue: Q-code "0d", RGB stays unlit as if the MoBo won't even detect it, still no access to the BIOS.

• Ran a CMOS, re-flashed to the 3003 BIOS above (which I have to: the default BIOS won't run zen3 without an update)

  • Same problem remains.

As a sidenote, I also made sure, in each test, that the RAM was properly clipped in, and that the board was properly powered on.

Also, if it can be any help to anyone, here are two pictures: this one shows the current error on the MoBo with one RAM stick in, and this one shows the DIMM slots with nothing in (I don't seem to see any damage of any sort).

The most jarring thing to me, in all of this, is that for around 15 days, the computer performed absolutely flawlessly before this issue just popped up. No fooling around with it, no spilling a drink or giving it a kick, or anything : I logged into Windows, and kaboom.

Having swapped out the RAM, I can only surmise that this has something to do with the MoBo itself being flawed? I very much hope not, because I would hate to have to disassemble the entire rig and cable work, take apart CPU cooler, clean it up, have to reinstall windows, all that. So if anyone can imagine any further steps that do not involve RMA-ing the MoBo, I would be beyond grateful.

Sorry for the long post, but I thought it was relevant to include the steps I'd already tried. Any inspiration from you fine people will be most welcome ! Thank you in advance !

Hey everyone I just attempted to started my new build for the time and it won't post and only gives me a lovely 0d error code.

I'm using an Asus Crosshair VI Hero motherboard with a Ryzen 1800x.

It seems to go through a few codes before getting to the 0d code. Any ideas on how to troubleshoot? Do I have a CPU or Mobo that's DOA?

I got a 5950x on loan from a friend who is on sabbatical to test it out and it simply won't boot on my following system:

- ASUS Crosshair VIII Impact with the latest BIOS

- 2X16GB GSkill PC 3600 DDR4 RAM

- Strix 3090

- PSU - Corsair SF 750

- QLED ERROR CODE: 0d with orange light on the DIMM Slot LED indicator.

Tried one stick of RAM, it booted to windows. Tried another set of DDR4 ram and will not boot in dual channel mode, showing the same 0d code. The board works perfectly in dual channel mode with my old 3950x CPU.

As a last resort, I tested the CPU on another board the ASUS TUF Gaming B450-PLUS II in dual channel config and everything booted fine.... I am so stumped and lost. Could it be a faulty motherboard?