Translations:Windows Server 2012 R2/14/en

Boot the computer from installation media (DVD, USB) or network (PXE).

Wait until Windows has loaded all the required files to system memory.

Select installation language, format of time and currency and keyboard settings. Click next.

Select Install now.

Type your installation code to the text field and click next. http://technet.microsoft.com/en-us/library/jj612867.aspx (not PXE boot)