I'm trying to run Windows Server 2012 on VirtualBox.
But after starting the machine I get the following error:
FATAL: No bootable medium found! System halted.
Update:
I checked both the md5 and sha1 hashes, they were both ok.
This confirms the download size:
EDIT2: You're trying to boot the language pack, not the installation medium.
EDIT1: just re-checking my microsoft secure download manager:
Might be a bit hard to read, but it says 3GB right there.