If you installed Desktop Environment

If you installed Desktop Environment, it's possible to create a Virtual machine on GUI. This example shows to install Windows Server 2012 R2 on GUI.
[1]	Install virt-manager first.

[root@dlp ~]#  yum -y install virt-manager

[2]	Start Desktop and run 'Virtual Machine Manager'.

[3]	Click 'New' button (it's just the PC-icon on upper-left) and open a wizard to create a new Virtual Machine.

[4]	Specify the name of virtual machine and installation source. This example selects local media.

[5]	Select Installation media or ISO image, and specify OS type and version. Windows Server 2012 in not listed, but it's possible to install it to select Windows 2008.

[6]	Specify the amount of memories and number of virtual CPUs.

[7]	Specify the amount of disks.

[8]	Open 'Advanced options' and make sure the settings for networking or architecture are correct.

[9]	Windows Server 2012 R2 Installation starts.

[10]	Installation finished and Windows Server 2012 R2 is running.