VM will not launch after upgrading CPU

[KyuLR]

I upgraded my CPU from a Ryzen 5 3600 to a Ryzen 9 5900X last night. When attempting to launch VM this morning, I get this error.

Result Code:
E_FAIL (0x80004005)
Component:
ConsoleWrap
Interface:
IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Virtualization has been enabled and disabled in BIOS.
VirtualBox has been uninstalled and reinstalled.

[mpack]

00:00:00.528309 HM: HMR3Init: Attempting fall back to NEM: AMD-V is disabled in the BIOS (or by the host OS)
00:00:00.528565 VMSetError: F:\tinderbox\win-6.1\src\VBox\VMM\VMMR3\NEMR3Native-win.cpp(1460) int __cdecl nemR3NativeInit(struct VM *,bool,bool); rc=VERR_NEM_NOT_AVAILABLE
00:00:00.528585 VMSetError: Not in a hypervisor partition (HVP=0)
00:00:00.528600 NEM: NEMR3Init: Native init failed: VERR_NEM_NOT_AVAILABLE.

You need to enable AMD-v virtualization (SVM) in your host PC BIOS, then restart from a full power down (restarting the host OS is not enough, the CPU has to lose power).

Related FAQ: I have a 64bit host, but can't install 64bit guests.

[KyuLR]

Restarted to ensure that it was enabled. Then fully shutdown my pc and removed power from PSU. Rebooted everything and still getting the same error message.

[mpack]

I'm afraid that unless you can somehow demonstrate that the VirtualBox message is wrong (and I've never heard of it being wrong before), then I don't know what else I can tell you. This is a self build PC? In which case perhaps ask the motherboard vendor how to enable AMD-v with the supplied BIOS.

[scottgus1]

Also check to see if Hyper-V is enabled, See HMR3Init: Attempting fall back to NEM (Hyper-V is active). And if you have 3rd-party antivirus, check that it is not using a "hardware virtualization' option.

[KyuLR]

Thank you both for your help. I contacted the motherboard manufacturer and they walked me through the process. In the X570 Gaming Pro Carbon Wifi motherboard, there are two instances that mentioned Virtualization, I only had one Enabled.