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AB350 Pro4 + 6 GPU = unstable

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=7459
Printed Date: 20 Jul 2025 at 5:07am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: AB350 Pro4 + 6 GPU = unstable
Posted By: Ric
Subject: AB350 Pro4 + 6 GPU = unstable
Date Posted: 26 Jan 2018 at 10:17pm
" rel="nofollow - Hi !

MB : AB350 Pro4 (bios internet update confirmed uptodate)
GPU : Sapphire RX580
And Driver : 18.1.1 - Adrenalin
Display handled by IGPU

Trying to configure a rig with 6 x Sapphire 580 on a AB350 Pro4.

Situation :
 - 5 x RX580 on the MB, with the PCIE2 empty.
With that configuration, (important ...) the logo at the startup is "ASRock" alone.
Windows will startup and detect my 5 GPUs.

Reboot.
The logo change to the ASRock-Sapphire .... 
Windows boot.
... and crash : "Thread stuck in device driver"
Again and again.

A config with 4 x Sapphire RX580 (PCIE1 and PCIE2 empty), logo at startup is (ASRock) and windows is stable.

A config with the 6 x Sapphire RX580 (all PCIE slots used), logo is ASRock-Sapphire and windows stuck in the boot.

I read that this change of logo is the visible part of an optimisation.
Is it possible to avoid this optimisation ?

Any suggestions ?
Ric.




Replies:
Posted By: Ric
Date Posted: 27 Jan 2018 at 1:45am
" rel="nofollow - ...
Next.
In the UEFI, notice that the version was not the last one !
So :
1) I update to version 3.40, with Windows utility. Performed well, reboot, and enter UEFI
2) Update to version 4.60, with the UEFI utility, through USB key. Runs well, reboot.
And now ....
The MB hang at boot with the "ASRock" logo and the different messages from the UEFI ("Press F2 or DEL ...."). but : no key works, the booting sequence is blocked there :(

Help please .....

Edit:
Try to clear the CMOS.
Same result : hang at "ASRock" logo and "Press ...." messages.

(Note that I don't have anything connected to my MB, except RAM and CPU)

Edit 2: 
One key is working : the TAB. It switched the display.
but F2, DEL, F6 are not working.
Keyboard lights are "on", and key lock is switchable.

Screen is connected using DVI-D

Any suggestion ?


Posted By: kerberos_20
Date Posted: 27 Jan 2018 at 5:27am
did u try to disable sapphire optimisations?
if its not visible, u can edit bios to make it visible

i doubt anybody here will help u
board manuals for sure says to use pcie x16 slots for gpu :)


Posted By: Ric
Date Posted: 27 Jan 2018 at 12:34pm
Good remark Thumbs Up, and will try the tips to activate option in bios as soon as it startup Cry

Have tried a "clean config" :
- AB350 PRO4
- CPU
- RAM (4 x DDR4)
- one Sapphire RX580 on PCIE2

The display is then switching to the 580 (normal), logo "ASRock-Sapphire" appears, and ... same post messages ("press F2/Del ..."). Only TAB key works.

Bad UEFI update --> RMA ?
Or any other suggestion ?



Posted By: kerberos_20
Date Posted: 27 Jan 2018 at 2:37pm
bad eufi update u can RMA...nobody checks whats inside, they just reflash it and resell xD



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