Cannot dismiss green turtle on AMD computer

Discussions related to using VirtualBox on Windows hosts.
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andro
Posts: 23
Joined: 6. Jul 2015, 13:22

Cannot dismiss green turtle on AMD computer

Post by andro »

New AMD based PC. Unable to dismiss green turtle, and very poor performance on what is surely a very fast processer, the AMD Ryzen 7 9800X3D 8-Core Processor. I have disabled Hyper-V using the Control Panel, to no avail.

Any suggestions as to how to troubleshoot this? Windows 11.
multiOS
Volunteer
Posts: 1743
Joined: 14. Sep 2019, 16:51
Primary OS: Mac OS X other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows, Linux, BSD
Location: United Kingdom

Re: Cannot dismiss green turtle on AMD computer

Post by multiOS »

It's not just Hyper-V which has to be considered, it's all of the Virtualisation-Based Security (VBS) features that are now enabled in all Windows 10/11 versions by default; and which can be re-enabled by Windows updates 'repairing' disabled security settings.

For a few clues see viewtopic.php?t=99390
IPGSupp
Posts: 9
Joined: 24. Oct 2022, 21:55

Re: Cannot dismiss green turtle on AMD computer

Post by IPGSupp »

I have a Ryzen, worked after all of these. (First three command line).

Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-Hypervisor

DISM /Online /Disable-Feature:Microsoft-Hyper-V

bcdedit /set hypervisorlaunchtype off

Group Policy Editor Computer Configuration > Administrative Templates > System > Device Guard > Turn On Virtualization Based Security. (set to Disabled)
andro
Posts: 23
Joined: 6. Jul 2015, 13:22

Re: Cannot dismiss green turtle on AMD computer

Post by andro »

Group Policy Editor Computer Configuration > Administrative Templates > System > Device Guard > Turn On Virtualization Based Security. (set to Disabled)
I have Windows 11 Pro. I do not see this option.
MoinDix
Posts: 11
Joined: 3. Mar 2021, 15:18

Re: Cannot dismiss green turtle on AMD computer

Post by MoinDix »

Good morning,

I recently had the same issue, I followed the steps above but the after the shutdown the turtle was still there.
On after a reboot it was gone, i did went into the Bios but did not change anything.

Just adding my 2ct

MoinDix
andro
Posts: 23
Joined: 6. Jul 2015, 13:22

Re: Cannot dismiss green turtle on AMD computer

Post by andro »

Thanks All for help. I spent a very long time following suggestions here and elsewhere and from Microsoft to no avail, and worse in Windows 11 was then getting error messages about Core Isolation. Nothing. Green turtle persists. It's a new computer with a top of the line AMD Ryzen 7 9800X3D. By any standard that is a powerful chip. I never had this problem on previous computer based on Intel.

I regret to say that there comes a time when so much struggle is not worth it. I upgraded to Windows 11 Pro, took a little while to learn Hyper V - since this seems to be implicated heavily in this plot - and I have no further complaints as the same VM's fly like the wind in that platform. This, after many many years of happily using Virtualbox until this AMD issue. All rather strange, as it is apparent this obviously does work for most people.

So we can close the topic.
moore22
Posts: 1
Joined: 1. Apr 2026, 12:08

Re: Cannot dismiss green turtle on AMD computer

Post by moore22 »

I can relate to the frustration, especially when using a high end AMD chip but still hitting compatibility issues. I ran into something similar and found Hyper V works more smoothly with Windows 11 security features like Core Isolation, so your switch makes total sense.
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