You cannot have VirtualBox and Hyper-V comfortably coexist on the same machine. I have Hyper-V enabled on my personal windows laptop and I needed some "bare metal" to install VirtualBox. Well as luck had it, I was able to salvage my daughter's busted old laptop. Its video is hosed which is just fine for my purposes. I'll be running it as a headless VM host. Here is how I set it up: