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Although this has been asked several times, the answers do not work on my system. Most of the answers are the same as in this post: best answer.

In short: VirtualBox does not give me the option of running a 64-bit OS although (I think) my machine has the capability.

Things I have checked:

  1. BIOS
  2. Hyper-V (boxes are un-ticked)
  3. CredentialGuard and DeviceGuard (not installed)
  4. The CPU (this is the only part where I am unsure, screenshot below)

Settings and versions:

  • Dell Latitude 7480
  • Windows 10 (see screenshot)
  • VirtualBox 5.1.26

Windows OS

BIOS (see screenshot):

  • Virtualization Support
    • Virtualization (enabled)
    • VT for Direct I/O (enabled)
    • Trusted Execution (disabled)

BIOS

Hyper-V deactivated

How can I do this?

Scott - Слава Україні
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Quinn
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  • Could you run [Coreinfo](https://docs.microsoft.com/en-us/sysinternals/downloads/coreinfo) and check if it lists a `*` next to "Supports … hardware-assisted virtualization"? – u1686_grawity Sep 06 '17 at 08:47
  • No, no star there @grawity: `Intel(R) Core(TM) i7-7600U CPU @ 2.80GHz Intel64 Family 6 Model 142 Stepping 9, GenuineIntel Microcode signature: 0000004E HTT * Hyperthreading enabled HYPERVISOR * Hypervisor is present VMX - Supports Intel hardware-assisted virtualization SVM - Supports AMD hardware-assisted virtualization X64 * Supports 64-bit mode` – Quinn Sep 06 '17 at 22:37
  • Hmm, can you successfully _activate_ HyperV and set up a test VM in it? If it works, then you can probably conclude that the hardware/firmware is fine, and that HyperV hadn't fully disabled itself. – u1686_grawity Sep 07 '17 at 05:37
  • Thanks @grawity, I'll check it out. One of the IT experts here said there is a problem with emulating 64 bit virtualization without specific hardware which is possibly not in this machine. So the host can be 64 but not the guest. I'll try track it down but I think your first hunch was correct about the hardware-assisted virtualization! – Quinn Sep 07 '17 at 23:31
  • "Specific hardware" might be an IOMMU, but you likely have that as well (your photo has a "VT for Direct I/O" section). There's really not much else to it. – u1686_grawity Sep 08 '17 at 07:29

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