https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 15 Jun 2026 19:30:09 +0000 Fri, 12 Jun 2026 16:37:48 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113535 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201656&title=bios-4-20-dgpu-lockup-other-issues#201656 Author: ImbaDakula
Subject: 113535
Posted: 12 Jun 2026 at 4:37pm

I use bios 4.20 on NOVA x870e, I don't have such a problem with my RTX 4090, I think the possible cause for you could be the graphics card.
Do you use a riser?]]> Fri, 12 Jun 2026 16:37:48 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201656&title=bios-4-20-dgpu-lockup-other-issues#201656 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201634&title=bios-4-20-dgpu-lockup-other-issues#201634 Author: Xaltar
Subject: 113535
Posted: 11 Jun 2026 at 3:54pm

As I suggested in reply to your other post, start with 4.10 if you roll back. There
were significant changes between 4.10 and 4.20. As for settings I am afraid I can't
really help, I don't have an AM5 system on hand and the settings will be very
different to my AM4 systems. ]]> Thu, 11 Jun 2026 15:54:58 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201634&title=bios-4-20-dgpu-lockup-other-issues#201634 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201633&title=bios-4-20-dgpu-lockup-other-issues#201633 Author: Preytheon
Subject: 113535
Posted: 11 Jun 2026 at 4:31am

I'm fine with trying a BIOS roll-back and/or alternate BIOS settings, but I don't want to have to cycle back through the BIOS versions one at a time... and then I find that there's a standby / PCIe setting that was changed by the update to 4.20 that started this issue and rollbacks won't reverse that.]]> Thu, 11 Jun 2026 04:31:42 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201633&title=bios-4-20-dgpu-lockup-other-issues#201633 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201632&title=bios-4-20-dgpu-lockup-other-issues#201632 Author: Preytheon
Subject: 113535
Posted: 11 Jun 2026 at 4:22am

NDRE28 wrote: Hi! All I can say is that, on my motherboard, ASRock X670E Taichi, BIOS v4.20 is rock-stable. No issues. My guess is that you, probably, have some hardware related issues. Maybe your video card is the culprit. Please test your system with a different video card in it, if you have that option!

It started immediately after I updated the BIOS and is an issue across multiple OS's, so definitely not driver-related.

The card has been fine recovering from Standby up to the point that I updated the BIOS.

I'll swap in another GPU the next time I have to take this one out, re-enable Standby and see if I can reproduce it.

Hoping I can just find out which BIOS setting I need to change or which BIOS version I need to roll back to, to make it stable again where I can use Standby... as this is getting really irritating, REALLY fast.]]> Thu, 11 Jun 2026 04:22:29 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201632&title=bios-4-20-dgpu-lockup-other-issues#201632 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201628&title=bios-4-20-dgpu-lockup-other-issues#201628 Author: NDRE28
Subject: 113535
Posted: 09 Jun 2026 at 10:44pm

Hi!

All I can say is that, on my motherboard, ASRock X670E Taichi, BIOS v4.20 is rock-stable.
No issues.

My guess is that you, probably, have some hardware related issues.

Maybe your video card is the culprit.
Please test your system with a different video card in it, if you have that option!




Edited by NDRE28 - 09 Jun 2026 at 10:47pm]]> Tue, 09 Jun 2026 22:44:03 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201628&title=bios-4-20-dgpu-lockup-other-issues#201628 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201627&title=bios-4-20-dgpu-lockup-other-issues#201627 Author: Xaltar
Subject: 113535
Posted: 09 Jun 2026 at 8:43pm

I replied in your other thread here.

If anyone else is experiencing similar issues with 4.20 please share here. Any info
that could potentially help ASRock's BIOS team identify and track down issues would
be great.]]> Tue, 09 Jun 2026 20:43:10 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201627&title=bios-4-20-dgpu-lockup-other-issues#201627 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201624&title=bios-4-20-dgpu-lockup-other-issues#201624 Author: Preytheon
Subject: 113535
Posted: 09 Jun 2026 at 8:19pm

Hi - it seems we can't post threads to see if other people are experiencing this issue?

Is there a known issue with BIOS 4.20 hard-locking the PCIe GPU?

I only ask as this issue started as soon as I updated to BIOS 4.20.

Not just a PC crash, purely a dGPU lock-up... when it happens, the PC has to be powered off, unplugged and then either power-flushed (hold down the power button to get the PSU to flush the residual power) and then then left for >24h or the GPU has to be removed, unplugged and then re-installed!

When this happened the PC doesn't even crash - the APU continues to work perfectly and I have now plugged my 2nd and 3rd screens into the APU, so I don't lose any more work.

If I do a regular power off and back on, the GPU lights stay off and I just get a red LED on the motherboard.

This happens VERY repeatedly from my main OS (Nobara Linux 43) if I trigger stnadby, but also less consistently in Windows11 and even once from the BIOS!

I'm interested to know if this is a known issue, can I safely roll back to a known good BIOS and if so, what is the recommended version?

System spec:
Ryzen 7 7800X3D, ASRock X670E Steel Legend, RTX3080Ti Founders Edition, 2x16Gb Teamgroup T-Create Expert, various M.2+SATA drives (2x 2Tb Samsung 990PRO, 1Tb WD SN850, 8Tb SATA WDRED, 2Tb SATA Seagate).]]> Tue, 09 Jun 2026 20:19:43 +0000 https://forum.asrock.com/forum_posts.asp?TID=113535&PID=201624&title=bios-4-20-dgpu-lockup-other-issues#201624