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: 13 Jun 2026 at 11:21pm
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? |