AB350M Pro4@4.70 + Server 2016 + HyperV=Bootloop
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=8275
Printed Date: 26 Jul 2025 at 8:21pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: AB350M Pro4@4.70 + Server 2016 + HyperV=Bootloop
Posted By: Sightus
Subject: AB350M Pro4@4.70 + Server 2016 + HyperV=Bootloop
Date Posted: 03 Apr 2018 at 10:14pm
" rel="nofollow - Hi,
since I've been upgrading all my Ryzen 1700@AB350M Pro4 machines, it is not possible to run Server 2016 (at any Version or Update-level) with the installed Hyper-V role. Every time I do so, the system won't boot an hangs during its process.
The only solution that works is to downgrade the BIOS to Version 3.40 or below, which can't be the solution after all.
I checked if this problem occurs with Windows 10 (with Hyper-V-Feature), but surprisingly that works fine. Hence I suspect, there must be something wrong with the BIOS >3.40.
Can anybody confirm this? Has anybody a fix for it? I wanted to upgrade all my old systems (>80) to Ryzen @AB350M Pro4 or a possible AB450M Pro4, but would now hesitate due to this bug.
Thanks!
BTW: Server 2008R2@Hyper-V works regardless the BIOS version.
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Replies:
Posted By: Sightus
Date Posted: 13 Apr 2018 at 9:00pm
" rel="nofollow - Nobody? Is there a way to contact AsRock about it?
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Posted By: Sightus
Date Posted: 25 Apr 2018 at 3:58am
I'll continue to write to myself; seems this problem ist related to the combination of the Ryzen 2xxx-Support-BIOS and an installed Ryzen 1xxx.
Today I switched my Ryzen 7 1700(x) with a brand new Ryzen 7 2700X and Server 2016 with the activated Hyper-V-role is booting without a problem.
So:
a) If you need Hyper-V@Server 2016 with an Ryzen 1xxx ==> use the BIOS 3.40 or below.
b) If you want the same but you are running a Ryzen 2xxx ==> use the BIOS 3.70 or above.
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Posted By: ninjacat
Date Posted: 16 Feb 2019 at 7:50pm
Thank you for your information.
I user Ryzen 1600 to run windows server 2019.
After downgrade bios to 3.40.
I can boot OS and use hyperV.
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Posted By: xhue
Date Posted: 16 Feb 2019 at 10:38pm
Yes, thank you, indeed!
This type of information is really scarce, so your 'mini blog' will save some poor soul a lot of time.
Unfortunately, that's how ASRock BIOS team is...
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