BIOS 4.20 dGPU lockup/other issues
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=113535
Printed Date: 29 Jul 2026 at 3:16pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: BIOS 4.20 dGPU lockup/other issues
Posted By: Preytheon
Subject: BIOS 4.20 dGPU lockup/other issues
Date Posted: 09 Jun 2026 at 8:19pm
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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). ------------- Main rig: Ryzen 7 7800X3D, RTX3080Ti FE, 32Gb Teamgroup Create-T DDR5-6000C30, AC Freezer3 280mm AIO, Asrock Steel Legend X670E, 2x 2Tb Samsung 990 Pro, 1Tb WDSN850, 8Tb SATA WD80EFAX, Corsair HX850. |
Replies:
Posted By: Xaltar
Date Posted: 09 Jun 2026 at 8:43pm
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I replied in your other thread https://forum.asrock.com/forum_posts.asp?TID=113447&PID=201626𱎚" rel="nofollow - 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. ------------- 
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Posted By: NDRE28
Date Posted: 09 Jun 2026 at 10:44pm
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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! |
Posted By: Preytheon
Date Posted: 11 Jun 2026 at 4:22am
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. ------------- Main rig: Ryzen 7 7800X3D, RTX3080Ti FE, 32Gb Teamgroup Create-T DDR5-6000C30, AC Freezer3 280mm AIO, Asrock Steel Legend X670E, 2x 2Tb Samsung 990 Pro, 1Tb WDSN850, 8Tb SATA WD80EFAX, Corsair HX850. |
NDRE28 wrote:Posted By: Preytheon
Date Posted: 11 Jun 2026 at 4:31am
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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. ------------- Main rig: Ryzen 7 7800X3D, RTX3080Ti FE, 32Gb Teamgroup Create-T DDR5-6000C30, AC Freezer3 280mm AIO, Asrock Steel Legend X670E, 2x 2Tb Samsung 990 Pro, 1Tb WDSN850, 8Tb SATA WD80EFAX, Corsair HX850. |
Posted By: Xaltar
Date Posted: 11 Jun 2026 at 3:54pm
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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. -------------
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Posted By: ImbaDakula
Date Posted: 12 Jun 2026 at 4:37pm
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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? |
Posted By: Xaltar
Date Posted: 15 Jun 2026 at 9:55pm
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Did you manage to resolve your issue in the end Praytheon? -------------
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Posted By: Preytheon
Date Posted: 27 Jun 2026 at 11:27pm
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No resolution yet - it is such a fundamental failure and renders the motherboard so useless, so I was hoping for an acknowledgement of a known issue and a possible fix-forward. I'm tempted just to roll all the way back to mid-2024, where I know the BIOS was working without hard-locking the dGPU every time it goes to standby. ------------- Main rig: Ryzen 7 7800X3D, RTX3080Ti FE, 32Gb Teamgroup Create-T DDR5-6000C30, AC Freezer3 280mm AIO, Asrock Steel Legend X670E, 2x 2Tb Samsung 990 Pro, 1Tb WDSN850, 8Tb SATA WD80EFAX, Corsair HX850. |
Posted By: Xaltar
Date Posted: 27 Jun 2026 at 11:33pm
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I replied your other thread. With a 7800X3D you should be fine on the older BIOS. It was designed for that generation of CPU anyway. Sometimes the latest BIOS isn't ideal for older generation CPUs. We saw it on AM4 too. Hopefully ASRock resolve these issues in 4.30+. -------------
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