https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 25 May 2026 19:08:19 +0000 Mon, 30 Mar 2026 18:39:32 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113481 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201142&title=x570-taichi-dual-gpu-issue#201142 Author: Xaltar
Subject: 113481
Posted: 30 Mar 2026 at 6:39pm

For BIOS requests you will need to open a support ticket with ASRock Tech Support:
https://tw.asrock.com/events/tsd.asp

I am just a moderator, I try to help where I can but I am not ASRock Tech Support.]]> Mon, 30 Mar 2026 18:39:32 +0000 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201142&title=x570-taichi-dual-gpu-issue#201142 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201141&title=x570-taichi-dual-gpu-issue#201141 Author: Wizhhh
Subject: 113481
Posted: 30 Mar 2026 at 6:03pm


In hidden device manager Showing A750 Error code 45

Install Chipset driver, restart, not detected.

Restart in safe moode, DDU Intel GPU and shutdown, Turn ON PC, install Chipset driver, Install Intel Driver, restart, not detected.

Shutdown, unplug GPU, unplug cmos battery, reset CMOS, plug the battery and GPU, Start system, still not detected, even in hidden device.

Restart in safe mode, DDU Driver and shutdown.

Turn On PC, Run Intel Driver as administrator.
Still not detected. Not Show up in Device manager.

Unplug A750, Change with RX470. Same, not detected in hidden device manager.
Unplug RX470 and B580, Change A750 to PCI e 1, not detected, hmmm funny..


Plug B580, Boot Normally. Headache? absolutely....


Here we go again..

Uninstal amd chipset, DDU, Install B580 Boot normally, i replace b580 with A750 work normally, i swap again B580 in pcie boot normally, i shut down pc, then A750 in pcie 3(not detected but show up in hidden device manager. Im stuck in here for now...


Please can we have bios bitfurcation setting 8x 8x for X570 taichi? Also more stability dual gpu recognition.. ]]> Mon, 30 Mar 2026 18:03:02 +0000 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201141&title=x570-taichi-dual-gpu-issue#201141 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201140&title=x570-taichi-dual-gpu-issue#201140 Author: Xaltar
Subject: 113481
Posted: 29 Mar 2026 at 5:36pm

I attempted to recreate your issue with my own x570 Taichi and a pair of RX 580s
but I wasn't able to reproduce it. I updated to 5.69 and installed all the drivers
etc but the system didn't exhibit the issue you describe. It may be because I don't
have the same additional hardware, I have a Ryzen 5 3600x in my Taichi at the moment
and I don't have an A750 to throw in. I am afraid that is about all I can do. I
am just the moderator here so I don't have access to the same kind of resources
as ASRock's Tech Support staff. I had hoped that the fact I coincidentally also
own an x570 Taichi would allow me to recreate the issue but no dice.

Good luck and let me know how it goes with ASRock's Tech Support department. ]]> Sun, 29 Mar 2026 17:36:17 +0000 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201140&title=x570-taichi-dual-gpu-issue#201140 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201139&title=x570-taichi-dual-gpu-issue#201139 Author: Xaltar
Subject: 113481
Posted: 29 Mar 2026 at 3:45pm

Is the issue specific to BIOS 5.69 or has it occurred on older versions too?

Try clearing CMOS then loading BIOS defaults. Once complete enter the OS and shut
down the system from there. Once this is done enter the BIOS and set whatever
settings you typically use.

Make sure you have the latest AMD chipset drivers installed.

An issue with your OS could potentially cause these symptoms too but if it was
working without issue and the only change is a BIOS update then I would open
a support ticket with ASRock and inquire with their Support staff:
https://tw.asrock.com/events/tsd.asp]]> Sun, 29 Mar 2026 15:45:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201139&title=x570-taichi-dual-gpu-issue#201139 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201138&title=x570-taichi-dual-gpu-issue#201138 Author: Xaltar
Subject: 113481
Posted: 29 Mar 2026 at 3:37pm

Wizhhh wrote: .

I have issue with dual gpu setup detection with x570 taichi im on latest bios 5.69

CPU 5800X3d
Gpu intel arc B580 + intel arc A750(pcie1 & pcie3)
1 nvme (pcie2), 1 SSD 3HDD all sata connection
Power Supply Thermalright 1000

This issue happened several times up till now, arc A750 not detected in task manager, also device manager display adapter, but show up in hidden devices with code 45. I know its not bad connection with pcie slot because when it was detected it function normally. When its single slot it work normally, both gpu is normal. I just shutdown my pc for a while or turn on in next day it wont show up/ detected.


Strange bios bitfurcation setting, No manual setting for dual 8X and 8X option.


Its like 2 days using dual gpu normally, then suddenly not detaected, reseat gpu unplug cable, uninstal with DDU, Instal driver, and when it want to detected then repeat Its like 2 days using dual gpu normally, then suddenly not detaected, reseat gpu unplug cable, uninstal with DDU, Instal driver, and when it want to detected then repeat.

PC just work normally with B580 while A750 with in hidden devices with code 45.

Please help me sir.

Xaltar wrote: Post created for Wizhhh

Edited by Xaltar - 29 Mar 2026 at 3:38pm]]> Sun, 29 Mar 2026 15:37:26 +0000 https://forum.asrock.com/forum_posts.asp?TID=113481&PID=201138&title=x570-taichi-dual-gpu-issue#201138