在虚拟机设置中，该案例VT-x / AMD-V是灰色的，我无法检查它。为什么？
- 我有一台 Windows 10 专业版主机（已更新）
- 我使用 Vbox 6.1（最新版本）
SVM mode在我的 BIOS 设置中已启用performancesWindows 任务管理器显示选项卡中已启用虚拟化AMD-V/Hyper-V Compatibility Checker说this machine is compatible with hyper-v- 在 Windows 功能 (
enable or disable windows features...) 中，hyper-v已禁用，containers已禁用，guarded host已禁用 - 在Windows Defender设置中，核心和内存隔离被禁用。
- 我重启了很多次
任何想法 ？
[编辑于 2020/05/26]
我忘了说：
- 我有一台 ryzen 5 3600x
- 我的主板是 MSI B450M PRO M2 MAX
[编辑 2 2020/05/26]
为了回答essjae评论：
我没有任何第三方防病毒软件。我只使用 Windows Defender。
当我跑步时systeminfo，我收到了这条信息Hyper-V Requirements: A hypervisor has been detected. Features required for Hyper-V will not be displayed.。考虑到这一点关联，这意味着 Hyper-v 已在运行。但我不明白为什么，因为当我进入时Enable or disable Windows features，Hyper-v未选中！（我重启了很多次）。
coreinfo.exe另外，这是（的输出关联）
> .\Coreinfo.exe
Coreinfo v3.5 - Dump information on system CPU and memory topology
Copyright (C) 2008-2020 Mark Russinovich
Sysinternals - www.sysinternals.com
AMD Ryzen 5 3600 6-Core Processor
AMD64 Family 23 Model 113 Stepping 0, AuthenticAMD
Microcode signature: 00000000
HTT * Multicore
HYPERVISOR * Hypervisor is present
VMX - Supports Intel hardware-assisted virtualization
SVM - Supports AMD hardware-assisted virtualization
X64 * Supports 64-bit mode
SMX - Supports Intel trusted execution
SKINIT - Supports AMD SKINIT
NX * Supports no-execute page protection
SMEP * Supports Supervisor Mode Execution Prevention
SMAP * Supports Supervisor Mode Access Prevention
PAGE1GB * Supports 1 GB large pages
PAE * Supports > 32-bit physical addresses
PAT * Supports Page Attribute Table
PSE * Supports 4 MB pages
PSE36 * Supports > 32-bit address 4 MB pages
PGE * Supports global bit in page tables
SS - Supports bus snooping for cache operations
VME * Supports Virtual-8086 mode
RDWRFSGSBASE * Supports direct GS/FS base access
FPU * Implements i387 floating point instructions
MMX * Supports MMX instruction set
MMXEXT * Implements AMD MMX extensions
3DNOW - Supports 3DNow! instructions
3DNOWEXT - Supports 3DNow! extension instructions
SSE * Supports Streaming SIMD Extensions
SSE2 * Supports Streaming SIMD Extensions 2
SSE3 * Supports Streaming SIMD Extensions 3
SSSE3 * Supports Supplemental SIMD Extensions 3
SSE4a * Supports Streaming SIMDR Extensions 4a
SSE4.1 * Supports Streaming SIMD Extensions 4.1
SSE4.2 * Supports Streaming SIMD Extensions 4.2
AES * Supports AES extensions
AVX * Supports AVX instruction extensions
FMA * Supports FMA extensions using YMM state
MSR * Implements RDMSR/WRMSR instructions
MTRR * Supports Memory Type Range Registers
XSAVE * Supports XSAVE/XRSTOR instructions
OSXSAVE * Supports XSETBV/XGETBV instructions
RDRAND * Supports RDRAND instruction
RDSEED * Supports RDSEED instruction
CMOV * Supports CMOVcc instruction
CLFSH * Supports CLFLUSH instruction
CX8 * Supports compare and exchange 8-byte instructions
CX16 * Supports CMPXCHG16B instruction
BMI1 * Supports bit manipulation extensions 1
BMI2 * Supports bit manipulation extensions 2
ADX * Supports ADCX/ADOX instructions
DCA - Supports prefetch from memory-mapped device
F16C * Supports half-precision instruction
FXSR * Supports FXSAVE/FXSTOR instructions
FFXSR * Supports optimized FXSAVE/FSRSTOR instruction
MONITOR - Supports MONITOR and MWAIT instructions
MOVBE * Supports MOVBE instruction
ERMSB - Supports Enhanced REP MOVSB/STOSB
PCLMULDQ * Supports PCLMULDQ instruction
POPCNT * Supports POPCNT instruction
LZCNT * Supports LZCNT instruction
SEP * Supports fast system call instructions
LAHF-SAHF * Supports LAHF/SAHF instructions in 64-bit mode
HLE - Supports Hardware Lock Elision instructions
RTM - Supports Restricted Transactional Memory instructions
DE * Supports I/O breakpoints including CR4.DE
DTES64 - Can write history of 64-bit branch addresses
DS - Implements memory-resident debug buffer
DS-CPL - Supports Debug Store feature with CPL
PCID - Supports PCIDs and settable CR4.PCIDE
INVPCID - Supports INVPCID instruction
PDCM - Supports Performance Capabilities MSR
RDTSCP * Supports RDTSCP instruction
TSC * Supports RDTSC instruction
TSC-DEADLINE - Local APIC supports one-shot deadline timer
TSC-INVARIANT * TSC runs at constant rate
xTPR - Supports disabling task priority messages
EIST - Supports Enhanced Intel Speedstep
ACPI - Implements MSR for power management
TM - Implements thermal monitor circuitry
TM2 - Implements Thermal Monitor 2 control
APIC * Implements software-accessible local APIC
x2APIC - Supports x2APIC
CNXT-ID - L1 data cache mode adaptive or BIOS
MCE * Supports Machine Check, INT18 and CR4.MCE
MCA * Implements Machine Check Architecture
PBE - Supports use of FERR#/PBE# pin
PSN - Implements 96-bit processor serial number
PREFETCHW * Supports PREFETCHW instruction
Maximum implemented CPUID leaves: 0000000D (Basic), 8000001E (Extended).
Maximum implemented address width: 48 bits (virtual), 48 bits (physical).
Processor signature: 00870F10
Logical to Physical Processor Map:
**---------- Physical Processor 0 (Hyperthreaded)
--**-------- Physical Processor 1 (Hyperthreaded)
----**------ Physical Processor 2 (Hyperthreaded)
------**---- Physical Processor 3 (Hyperthreaded)
--------**-- Physical Processor 4 (Hyperthreaded)
----------** Physical Processor 5 (Hyperthreaded)
Logical Processor to Socket Map:
************ Socket 0
Logical Processor to NUMA Node Map:
************ NUMA Node 0
No NUMA nodes.
Logical Processor to Cache Map:
**---------- Data Cache 0, Level 1, 32 KB, Assoc 8, LineSize 64
**---------- Instruction Cache 0, Level 1, 32 KB, Assoc 8, LineSize 64
**---------- Unified Cache 0, Level 2, 512 KB, Assoc 8, LineSize 64
******------ Unified Cache 1, Level 3, 16 MB, Assoc 16, LineSize 64
--**-------- Data Cache 1, Level 1, 32 KB, Assoc 8, LineSize 64
--**-------- Instruction Cache 1, Level 1, 32 KB, Assoc 8, LineSize 64
--**-------- Unified Cache 2, Level 2, 512 KB, Assoc 8, LineSize 64
----**------ Data Cache 2, Level 1, 32 KB, Assoc 8, LineSize 64
----**------ Instruction Cache 2, Level 1, 32 KB, Assoc 8, LineSize 64
----**------ Unified Cache 3, Level 2, 512 KB, Assoc 8, LineSize 64
------**---- Data Cache 3, Level 1, 32 KB, Assoc 8, LineSize 64
------**---- Instruction Cache 3, Level 1, 32 KB, Assoc 8, LineSize 64
------**---- Unified Cache 4, Level 2, 512 KB, Assoc 8, LineSize 64
------****** Unified Cache 5, Level 3, 16 MB, Assoc 16, LineSize 64
--------**-- Data Cache 4, Level 1, 32 KB, Assoc 8, LineSize 64
--------**-- Instruction Cache 4, Level 1, 32 KB, Assoc 8, LineSize 64
--------**-- Unified Cache 6, Level 2, 512 KB, Assoc 8, LineSize 64
----------** Data Cache 5, Level 1, 32 KB, Assoc 8, LineSize 64
----------** Instruction Cache 5, Level 1, 32 KB, Assoc 8, LineSize 64
----------** Unified Cache 7, Level 2, 512 KB, Assoc 8, LineSize 64
Logical Processor to Group Map:
************ Group 0
[编辑 3 2020/05/26]
正如Ramhound评论部分所要求的，这是我无法检查的选项的屏幕截图。
这是我的 BIOS 中的图片SVM mode。抱歉画质不佳。
我没有 Github Desktop。我只使用 git bash。
您可以在下面找到我的任务管理器的屏幕截图。
这是 Windows 功能的屏幕截图。
[编辑 4 2020/05/26]
结果如下Get-WindowsOptionalFeature -Online -FeatureName *Hyper-V*：
> Get-WindowsOptionalFeature -Online -FeatureName *Hyper-V*
FeatureName : Microsoft-Hyper-V-All
DisplayName : Hyper-V
Description : Provides services and management tools for creating and running virtual machines and their
resources.
RestartRequired : Possible
State : Disabled
CustomProperties :
FeatureName : Microsoft-Hyper-V
DisplayName : Hyper-V Platform
Description : Provides the services that you can use to create and manage virtual machines and their resources.
RestartRequired : Possible
State : Disabled
CustomProperties :
FeatureName : Microsoft-Hyper-V-Tools-All
DisplayName : Hyper-V Management Tools
Description : Includes GUI and command-line tools for managing Hyper-V.
RestartRequired : Possible
State : Disabled
CustomProperties :
FeatureName : Microsoft-Hyper-V-Management-PowerShell
DisplayName : Hyper-V Module for Windows PowerShell
Description : Includes Windows PowerShell cmdlets for managing Hyper-V.
RestartRequired : Possible
State : Disabled
CustomProperties :
FeatureName : Microsoft-Hyper-V-Hypervisor
DisplayName : Hyper-V Hypervisor
Description : Provides the Hyper-V Hypervisor.
RestartRequired : Possible
State : Disabled
CustomProperties :
FeatureName : Microsoft-Hyper-V-Services
DisplayName : Hyper-V Services
Description : Provides the services that you can use to create and manage virtual machines and their resources.
RestartRequired : Possible
State : Disabled
CustomProperties :
FeatureName : Microsoft-Hyper-V-Management-Clients
DisplayName : Hyper-V GUI Management Tools
Description : Includes the Hyper-V Manager snap-in and Virtual Machine Connection tool.
RestartRequired : Possible
State : Disabled
CustomProperties :
结果如下@(Get-Wmiobject Win32_ComputerSystem).HypervisorPresent：
> @(Get-Wmiobject Win32_ComputerSystem).HypervisorPresent
True
[编辑 5 2020/05/30]
我尝试使用命令手动启用 hw virt .\VBoxManage.exe modifyvm "110-proxy-ub-2004" --nested-hw-virt on，但是当我尝试启动 VM 时出现此错误：
我仍在寻找解决方案。
答案1
我终于找到了答案。即使Hyper-v在 中禁用了Windows features，该服务HV Host Service仍在运行。我禁用了所有Hyper-v服务，现在 Vbox VM 设置中的选项VT-x / AMD-V不再变灰，并且当我启用该选项时，我的 VM 会启动。
