Hello, I'm trying to install Windows 10 Tech Preview on a virtual machine, I'm using Oracle VM VirtualBox. But I don't succeed in installing it... I keep get alround different errors. The first time I tried it gave me an error saying it was meant to run on machines with more than 4GB of RAM, although it was a 32-bit version. So I tried with the 64-bit version thinking that would help, it didn't. The last time I gave the 64-bit version more RAM (4GB) and 10GB of space on the HDD, which I think should be sufficient... I only want to test it, I'm not going to save any files on it... Anyway, now it gives a completely different error (screenshot) saying: "Your PC needs to restart. Please hold down the power button. Error code: 0x0000005D" Does anybody know how to solve this problem? I've installed virtual machines before: Windows, Linux and even Mac OS X... I've google'd the errors but since it's only just available I can't find any solution... It shouldn't be that hard to install it on a virtual machine, perhaps it's not compatible with VirtualBox? But that isn't likely I think... Thanks in advance for your help!