Server 2012 R2 has the following minimum system requirements
CPU: 1.4 GHz 64-bit, RAM: 512MB, HDD: 32GB, Network adapter and DVD drive (if you intend to install the operating system from DVD media)
NOTE: this article has been done with the trail version of Server 2012 R2 (downloaded from the Microsoft website) and other versions MAY install a little differently
1. Turn on the computer and insert installation media
2. Set the computer to boot from the installation media
3. If the computer already has an OS on the HDD you will need to press any key on the keyboard to boot into the installation
4. Select language to install, time and currency format and click next
5. Click on Install now
6. Select the edition of server that you want to install
7. Read and accept the terms of use
8. Select the type of installation that you want to perform
9. If you selected Custom: Install Windows only you will now need to configure your hard drive partitions
10. Now you can walk away for 5 – 20 minutes while Server 2012 R2 is being installed on your computer
11. Once the computer has rebooted you will be asked to set the Administrator password
12. When the computer is ready for you to use you will see the default Ctrl Alt Delete logon screen
Watch Video on how to install Server 2012 R2