virtualbox.org

Hello.

I try to install Windows 7 64bit guest on Windows 7 32bit host with Virtualbox 4.1.18. My CPU is Phenom X6 with AMD-V, virtualization is enabled in BIOS.

I've created a new VM with name "Windows 7 64", and Virtualbox has assigned "Windows 7 (64 bit)" type to it automatically (with I/O APIC enabled). Now I try to install the system. Windows installation starts fine, it begins to copy files. When it reaches ~15% my PC (host) suddenly goes to reboot.

What's the problem?

Please see this Minimum information needed for assistance

I've tried the latest VB version, now it works fine.