Guru critical error on Ubuntu 64bit VM, Windows 10 host

[crumbles]

Hi,

I'm trying to setup a VM using a minimal Ubuntu 16.04 64-bit install CD on a Windows 10 host. I create the machine using the default options, load the ISO in the optical drive and start. Things run fine at first, then I get to the main menu, choose 'Install', and get a critical error. I'm running the latest Vbox version (6.1.6).

I searched on the forums and tried various things.
- Checked that virtualization is enabled in BIOS.
- Checked that Hyper-V was unchecked in the Windows optional features.
- Disabled Hyper-V using the 'bcdedit /set hypervisorlaunchtype off' command line.
- Played around with various configurations of virtualization in the VM settings.

Nothing made a difference.
A minimal install CD of Ubuntu 16.04 32-bit works. So is a minimal install CD of Gentoo.

Any tips to solve this?
Thanks in advance.

(I'm not including the PNG since it's just an 800x600 black screen)

[mpack]

Why so stingy with the RAM/VRAM and CPU? Try bumping it all up to something reasonable for a 64bit guest OS. E.g. 2048MB RAM, 128MB graphics RAM, 2 cores.

If you still get the triple fault then download the ISO again, or if this is a custom installer then contact the vendor.

[crumbles]

Redownloading the ISO did the trick.

Thanks for the help !