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If you get “Not in a hypervisor partition” & “VT-x is Disabled in BIOS” errors when creating or starting a VirtualBox machine in Windows 10, continue reading below to fix the problem.
The problem: After installing for first time VirtualBox on a Windows 10/11 computer, you may receive one of the following errors when trying to create a virtual machine.
Not in a hypervisor partition (HVP=0)(VERR_NEM_NOT_AVAILABLE).
VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED)
OR
AMD-V is disabled in the BIOS (or by the host OS) (VERR_SVM_DISABLED)
Intel VT-x, is a Hardware Virtualization Technology introduced by Intel and required to run multiple operating systems simultaneously on a single physical machine.
Similar to Intel VT-x technology is AMD-V, short for AMD Virtualization, which is the hardware virtualization technology developed by Advanced Micro Devices (AMD).
Virtualization Technology is required by hypervisors such as VMware, Hyper-V, and VirtualBox to manage and create virtual machines.
How to FIX: ‘VT-x is disabled in the BIOS for all CPU modes’ in Windows 10/11.
Method 1. Enable Virtualization in BIOS.
The error “VT-x is disabled in the BIOS” if you own an Intel CPU, or “AMD-V is disabled in the BIOS” if you own an AMD CPU, means that the Virtualization support is not enabled in your computer BIOS. To enable the “VT-x” or “AMD-V” Virtualization support on your PC:
Step-1. Enter in BIOS/SETUP.
Enter in BIOS/UEFI SETUP, using one of the following ways:
A. Enter in BIOS from Windows 10/11.
1. Press and hold down the SHIFT key and go to Start > Power 
and click Restart.
2. After restarting click Troubleshoot > Advanced options > UEFI Firmware Settings.
3. The computer will restart again and will enter in BIOS setup.*
4. Continue to step-2.
* Note: On some computers, depending on the manufacturer, you may be prompted to press a corresponding key to continue entering the BIOS.
B. Enter in BIOS Using a Key.
1. Shut down your PC.
2.Turn on your PC and repeatedly press the corresponding key* to enter in BIOS Setup. (e.g. F2, F10, F8, F12 or DEL),
* Note: The key to enter in BIOS is vary from manufacturer to manufacturer. To find out the relevant key to enter the BIOS, see the support website of the laptop or motherboard manufacturer.
3. After entering BIOS, continue to next step.
Step-2. Enable Virtualization in BIOS/UEFI.
1. According your CPU manufacturer, use the instructions below to enable the Virtualization technology in BIOS:
-
AMD CPU’s: go to M.I.T. tab –> Advanced Frequency Settings –> Advanced Core settings and the set the SVM Mode (aka “Secure Virtual Machine”) to Enable.
- Intel CPU’s: go to Advanced* tab and set the Intel® Virtualization Technology (VT-x) & VT-d settings to Enabled.
* Note: If you can’t find the Virtualization setting in “Advanced” tab, look under the BIOS Features, Performance, Security, or System Configuration tabs.
2. When done, Save and Exit from BIOS setup, boot to Windows and try again to create the virtual machine in VirtualBox. If the problem persists, continue to next method.
Method 2. Disable Hyper-V in Windows features.
In some cases the error “VT-x is disabled” appears, when ‘Hyper-V’* is enabled on the machine.
* Info: Hyper-V is Microsoft’s hypervisor platform and, like the VΜware or VirtualBox hypervisors, allows you to run multiple operating systems on a singe Windows PC.
1. Press the Windows 
+ R keys to open the RUN command box
2. Type “optionalfeatures” and hit Enter.
3. Here uncheck the Hyper-V feature and click OK.
4. Restart your computer and try to create the virtual machine.
That’s it! Which method worked for you?
Let me know if this guide has helped you by leaving your comment about your experience. Please like and share this guide to help others.
