https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 19 Jun 2026 08:50:07 +0000 Wed, 17 Jun 2026 23:01:10 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 30 https://forum.asrock.com/RSS_topic_feed.asp?FID=12 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113496&PID=201677&title=x870e-nova-d4-on-restart-cold-boot#201677 Author: Xaltar
Subject: X870E Nova D4 on restart/cold boot
Posted: 17 Jun 2026 at 11:01pm

Thanks for the update. It's been quite a journey. I guess it goes to show, never
overlook a common component in testing. Even a keyboard or mouse can potentially
be the cause of strange symptoms. It makes me wonder if others who ended up replacing
components to solve issues could have fallen prey to a similar cause. I will definitely
be keeping this in my back pocket from now on, trying with a different (wired)
mouse and keyboard early on in troubleshooting. ]]> Wed, 17 Jun 2026 23:01:10 +0000 https://forum.asrock.com/forum_posts.asp?TID=113496&PID=201677&title=x870e-nova-d4-on-restart-cold-boot#201677 https://forum.asrock.com/forum_posts.asp?TID=113496&PID=201676&title=x870e-nova-d4-on-restart-cold-boot#201676 Author: dom0xDee4
Subject: X870E Nova D4 on restart/cold boot
Posted: 17 Jun 2026 at 7:38pm

Hello,

so after several weeks - i am at "boots reliably".

However i can trigger 4D occasioanlly if "Fast startup" in windows is enabled.

TLDR: issue on my end pretty much was due to dodgy/failing Wireless mouse USB dongle!

I will still list anything i did and extensive testing coducted - i went as far as create a custom bitfield for BIOS settings / combinations for easier tracking of 4D occurence.

Final realization came when i figured changing the number of USB devices influences how often error would occur, but without clear indication.

So i was shuffling devices around and noticed if i plug mouse dongle in certain ports it barely can POST.

The root cause was eventually traced to a faulty Wireless Mouse USB Dongle that had remained plugged into the rear USB array throughout the majority of the testing lifecycle. During a dedicated peripheral shuffle to isolate connected USB loads, the following repeatable symptoms were observed: CPU-Direct USB Controller Failure: When the dongle was plugged into the rear "Lightning Gaming" or CPU-direct USB ports (USB 32_1), an immediate, immense system-wide stutter began, or the mouse completely stopped responding - in USB 32_7 it would refuse to work altogehter. It behaved similarly in all USB 3.x ports, it would only work in USB 2.0 rear ports where it was plugged for almost all the time. High Thermal Output: On physical inspection, this miniature USB dongle was found to be extremely hot to the touch within minutes of operation, indicating an internal hardware component failure. Over-Current Safety Trip: When plugged into a front panel USB 2.0 header, the faulty dongle caused an immediate safety shutdown, instantaneously powering off the entire PC. Testing the specific mouse and dongle on an completely independent Acer Nitro laptop replicated the severe operational failure and system stutter immediately, isolating the defect entirely to the peripheral.

Important notes.

Tested many various memory configs, i bought additional QVL kit (which is in there now, "barebones SK Hynix greenies) - generally 4D would DECREASE, in some cases ALOT with aggresive power settings - the explanation for it is likely more voltage gave it higher margin, due to faulty dongle messing various circuitry on board.

Whenever i'd get 4D, i have realized all i have to do is press "Reset" button. Usually one reset would get it happily into windows, sometimes two and in very very rare cases - three resets. This made zero sense to me, but did imply something about cold boot-wakeup and power didn't roll correctly.
What also made little sense, once powered on machine would run stress tests for many many hours, with zero issues. Basically only trouble was true cold boot, intermittent.

I will post later all i did and settings that eventually led to lower error count.
Conclusion is - if anyone happens to need such "exotic" workarounds - something is not quite right and if you are debugging it yourself - make sure to really inspect and suspect EVERY little bit. In my case, i have ruled out almost everything - PSU, CPU and dreaded USB dongle were the last ones. I almost bought another mainboard and / or CPU before realizing that small thing is burning back there.


SK Hynix greenies are not bad at all (they're M-die before anyone asks) - perhaps non-QVL, XMP-only Kingston kit i replaced has tighter / better on-dimm voltage regulation - but so far that hasn't proved problematic to run SK's at "mild OC" 6000 / CL40 / 1.25V / VDDIO 1.25, VSoC 1.15. (can go much tighter timings, but needs higher voltage on VSoC, VDDIO, VDIMM, which i opted out of - gains for what i need are negligible. SK's i have equipped with passive heatsink as well).
]]> Wed, 17 Jun 2026 19:38:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=113496&PID=201676&title=x870e-nova-d4-on-restart-cold-boot#201676 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201675&title=new-am5-bios-updates-now-available#201675 Author: Xaltar
Subject: New AM5 BIOS updates now available
Posted: 17 Jun 2026 at 12:37pm

It may be worth firing off a support ticket to ASRock:
https://tw.asrock.com/events/tsd.asp?kind=MB

Apparently the issue is related to RAM firmware bugs that weren't relevant before
but have become so with AM5. Most RAM brands/models work just fine but some have
buggy firmware that causes POST issues with 4.xx BIOS versions. ]]> Wed, 17 Jun 2026 12:37:12 +0000 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201675&title=new-am5-bios-updates-now-available#201675 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201674&title=new-am5-bios-updates-now-available#201674 Author: lizardfrominternets
Subject: New AM5 BIOS updates now available
Posted: 17 Jun 2026 at 5:12am

I don't have any SATA devices.
Downgrade to 3.50 helped, I guess I'll just replace the mobo later.
Thanks for advices.]]> Wed, 17 Jun 2026 05:12:21 +0000 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201674&title=new-am5-bios-updates-now-available#201674 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201673&title=new-am5-bios-updates-now-available#201673 Author: ImbaDakula
Subject: New AM5 BIOS updates now available
Posted: 17 Jun 2026 at 5:08am

Unmount all the HDDs you have, A6 indicates scanning one of the disks.
Be sure to take the battery out for at least 15 minutes!]]> Wed, 17 Jun 2026 05:08:43 +0000 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201673&title=new-am5-bios-updates-now-available#201673 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201669&title=new-am5-bios-updates-now-available#201669 Author: Xaltar
Subject: New AM5 BIOS updates now available
Posted: 16 Jun 2026 at 10:31pm

Have you tried removing power from the system and pressing and holding the power
button for 5 seconds or so with the CMOS battery removed? I saw another user report
a similar issue, the only way they could get their system to POST was by doing what
I suggested above.

Also, what RAM brand/model are you running? I have seen some people have issues
with RAM training on 4.xx because ASRock changed the defaults regarding "bank
refresh mode". You can try rolling back to the latest 3.xx BIOS for your board
and seeing if that gets you back to POSTing normally. If it does I would recommend
firing a support ticket off to ASRock with your RAM model number included and
a description of your issue. You can also give them a link to your comment in
this thread.

Good luck.]]> Tue, 16 Jun 2026 22:31:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201669&title=new-am5-bios-updates-now-available#201669 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201668&title=new-am5-bios-updates-now-available#201668 Author: lizardfrominternets
Subject: New AM5 BIOS updates now available
Posted: 16 Jun 2026 at 9:31pm

B650E Taichi Lite, before all issues I ran old BIOS from 2024 and it was fine.
Finally thought to update and installed 4.20
Black screen both on dGPU and iGPU.
Clear CMOS, reflash with flashback. Black screen.
Remove GPU, run on iGPU. Black Screen. Checked cable, works with my work laptop.
Checked "Dr Debug" post code, A6, I'm in BIOS, in theory?
Reflashed 4.10, and you guessed it, black screen on both Display Port(dGPU) and HDMI(iGPU).
9950X and 9070XT, so what can I try to do again??]]> Tue, 16 Jun 2026 21:31:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201668&title=new-am5-bios-updates-now-available#201668 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201664&title=bios-4-20-dgpu-lockup-other-issues#201664 Author: Xaltar
Subject: BIOS 4.20 dGPU lockup/other issues
Posted: 15 Jun 2026 at 9:55pm

Did you manage to resolve your issue in the end Praytheon? ]]> Mon, 15 Jun 2026 21:55:38 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201664&title=bios-4-20-dgpu-lockup-other-issues#201664 https://forum.asrock.com/forum_posts.asp?TID=113531&PID=201662&title=cpu-upgrade-from-2700x-to-5700x-help#201662 Author: Xaltar
Subject: CPU upgrade from 2700x to 5700x help
Posted: 13 Jun 2026 at 1:33pm

Awesome, glad to hear it worked. Enjoy the upgrade ]]> Sat, 13 Jun 2026 13:33:21 +0000 https://forum.asrock.com/forum_posts.asp?TID=113531&PID=201662&title=cpu-upgrade-from-2700x-to-5700x-help#201662 https://forum.asrock.com/forum_posts.asp?TID=113531&PID=201661&title=cpu-upgrade-from-2700x-to-5700x-help#201661 Author: xyirox
Subject: CPU upgrade from 2700x to 5700x help
Posted: 13 Jun 2026 at 8:53am

Update - I'm on 5700x now, works like a charm. Ty for help!

I had to use a different command fsA: was my external USB drive (I used two flashdrives but I figured out I had to use map command to list all the drive numbers and letters and it turned out I could list files from the connected flashdrive. It didn't want to read these files from SSD (it had NTFS system so I guess that was the problem). But launching it from fat32 worked fine. Whole process passed 100%]]> Sat, 13 Jun 2026 08:53:20 +0000 https://forum.asrock.com/forum_posts.asp?TID=113531&PID=201661&title=cpu-upgrade-from-2700x-to-5700x-help#201661