Asus ROG CROSSHAIR VIII HERO (Wi-Fi) x570 won't POST Q-Code "8d" - intermittent

[charltvisser]

Hi Guys

My new system intermittently turns on, though does not POST. Q-Code: 8d, Q-LED: DRAM (yellow) - according to manual. Occurs every 1-2 out of 5 boot attempts. Issue is usually overcome by turning system off and on again.

Changed Corsair Vengeance RGB PRO DDR4 3200 CL16 memory for equivalent Kingston HyperX Predator RGB (HX432C16PB3A/8), the latter which is listed as officially supported memory according to QVL online.

I have seen several reports online from other affected users with the same issue > https://www.reddit.com/r/ASUS/comments/cgmlmw/qcode_8d/ and https://www.reddit.com/r/ASUS/comments/cgmrhq/anyone_have_issue_with_the_new_x570_crosshair/?ref=rea....

Does anyone know if there is an underlying issue (perhaps BIOS)? Thank you in advance.

Regards,
CTV

[pecche]

RedSector73 wrote:
Dude, that's an awesome stable run. Well done. Can you share full timings/voltages etc for others once you're sure there done.

ok I keep it a few days and then I write to help the details soon

[Jean-De-Morray]

Thank you dlbogdan ! 

I have been struggleling for months with my random boot computer and the solution you posted worked fine for me.

Here is my hardware configuration  :

• MB : ROG STRIX B550-F GAMING   Bios : 3002 
• CPU :AMD Ryzen 7 3700X
• RAM : F4-3600C16D-16GTZR   X2 @3600 MHz with DOCP
• GPU : KFA2-RTX-2070-EX-one-clic-OC
• PSU : GIGABYTE P750GM  750W 
• SSD : Samsung SSD 980 Pro 2To X2

I was in touch with Asus french support, but they could not solve my problem. So i suggested them your solution. 

[dlbogdan]

Have you tried my fix with the lower SOC voltage ?

[RedSector73]

abysal wrote:

DMI BIOS
vendor American Megatrends Inc.
version 0901
date 08/27/2019
ROM size 16384 KB

Update your bios to 1001, this would help.

[seansplayin]

charltvisser wrote:
Hi Guys

My new system intermittently turns on, though does not POST. Q-Code: 8d, Q-LED: DRAM (yellow) - according to manual. Occurs every 1-2 out of 5 boot attempts. Issue is usually overcome by turning system off and on again.

Changed Corsair Vengeance RGB PRO DDR4 3200 CL16 memory for equivalent Kingston HyperX Predator RGB (HX432C16PB3A/8), the latter which is listed as officially supported memory according to QVL online.

I have seen several reports online from other affected users with the same issue > https://www.reddit.com/r/ASUS/comments/cgmlmw/qcode_8d/ and https://www.reddit.com/r/ASUS/comments/cgmrhq/anyone_have_issue_with_the_new_x570_crosshair/?ref=rea....

Does anyone know if there is an underlying issue (perhaps BIOS)? Thank you in advance.

Regards,
CTV

Failing to “post” or boot into windows 10 with 8d debug code, 100% stable once in Windows. *Followed suggestions in this forum to no avail. Was probably successful at booting into windows 50% of the time. Bios 1001 C8H/3800x stock CPU, 32GB DDR4 @ 3600 memory (4X8) using Ryzen Dram Calculator “fast” profile.

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **********************Solution*************************
Offset cpu vcore by +0.0125 *

[Phynellius]

I've been having trouble with this same problem since launch, I've got the CH8F. When I talked to Asus they told me to test it with a different processor which wasn't an especially helpful suggestion. I've used the board with my 3900x and 3950x now and both have the 8D issue on this board, but they don't have any problems on the Impact board. There is something going wrong with voltages on the hero and formula x570 boards causing this issue, it's frustrating since my memory timings are 12 passes clean.

[jedi95]

Phynellius wrote:
I've been having trouble with this same problem since launch, I've got the CH8F. When I talked to Asus they told me to test it with a different processor which wasn't an especially helpful suggestion. I've used the board with my 3900x and 3950x now and both have the 8D issue on this board, but they don't have any problems on the Impact board. There is something going wrong with voltages on the hero and formula x570 boards causing this issue, it's frustrating since my memory timings are 12 passes clean.

What eventually fixed this for me was to set the SOC voltage in the AMD overclocking menu in addition to the usual place. Before this, the system was fully stable once booted, but I would get 8D about once every 5th boot. I am using an SOC voltage of 1.05v on a 3950X. Once I changed this, the issue was completely gone.

Supposedly this works because the value in the AMD overclocking menu gets used briefly during POST, but I have no way to confirm this.

[Adrift]

I registered just to chime in as another one with the same 8d Q-Code and failure to boot issue. Have been having it since I built the machine back in 9/19. So aggravating. You'd think there'd be some BIOS update to fix it at some point between then and now.

Anyhow, I'm running the following:

AMD Ryzen 7 3700x
Asus Crosshair VIII Hero (non-Wi-Fi) running latest BIOS
G.SKILL Trident Z Neo 16GB (2x8GB) DDR4 3600
Seasonic FOCUS Plus 650 Gold
Gigabyte Nvidia RTX 2070 Super OC
Sabrent 1TB Rocket NVMe PCIe M.2 SSD
Samsung SSD 860 EVO 1TB
SAMSUNG 840 EVO 250GB
Windows 10 Pro v. 1909

I feel I've tried everything, but I'll try messing with the SOC voltage.

[Adrift]

Adrift wrote:
I registered just to chime in as another one with the same 8d Q-Code and failure to boot issue. Have been having it since I built the machine back in 9/19. So aggravating. You'd think there'd be some BIOS update to fix it at some point between then and now.

Anyhow, I'm running the following:

AMD Ryzen 7 3700x
Asus Crosshair VIII Hero (non-Wi-Fi) running latest BIOS
G.SKILL Trident Z Neo 16GB (2x8GB) DDR4 3600
Seasonic FOCUS Plus 650 Gold
Gigabyte Nvidia RTX 2070 Super OC
Sabrent 1TB Rocket NVMe PCIe M.2 SSD
Samsung SSD 860 EVO 1TB
SAMSUNG 840 EVO 250GB
Windows 10 Pro v. 1909

I feel I've tried everything, but I'll try messing with the SOC voltage.

The 8d Q-code issue appears to finally have been resolved with the latest Bios update. Bios 1302 that came out on 2020/03/03.

[666CZR]

Adrift wrote:
The 8d Q-code issue appears to finally have been resolved with the latest Bios update. Bios 1302 that came out on 2020/03/03.

I'm on 1302 and just had 4-5 consecutive boots with 8D Q-Code today. Cutting power off (from the PSU's switch) was the only way to boot without resetting CMOS
Crosshair VIII Hero with 3900X and 64GB G-Skill Trident Z Neo 3600Mhz running at 3200MHz as that seemed the highest stable setting. So much spent on a brand new build which not only it can't run the advertised speeds but it's also unstable at lower ones.