Server 2012 install keeps rebooting

[Gongista]

Hello
I'm trying to install Win server 2012 on Win 10, hovever the machine gets stuck in a loop of rebooting, when it gets to the screen with "Install now" button. I'm really not sure what's going on, especially looking at the fact, that earlier today I installed Windows 7 and serv 2008 without any problems. Here are the specs (logs are in the zip file):

Host - Windows 10 64-bit with 16GBs RAM
Guest - Windows Server 2012 R2 64-bit with 4GBs RAM
VirtualBox version 5.2.8

I would really appreciate some help. Thanks in advance.

[BillG]

If you are seeing the install now message, I would say that you are booting from the installation media, not from the virtual hard drive. Have you released the installation media from the vm's optical drive?

[socratis]

Exactly what BillG said. After you're done with the installation, eject the CD. Just close the VM window with the "Power off the machine" option, definitely *NOT* the "Save the machine state", and then eject the CD from the VM settings.