When you install Windows Server 2012 R2 using generic Microsoft media, it generates a Windows Bug Check error DPC_WATCHDOG_VIOLATION 0x00000133.
Workaround
Install the latest version of Intel’s I350 Gigabit Network driver during Windows Server 2012 R2 installation.
The latest version of Intel’s I350 Gigabit Network driver is located on the Oracle Server X5-8 Oracle System Assistant flash drive:
%DRIVE%:\Windows\2012R2\Drivers\Intel-NIC-1gbe
See the Oracle Server X5-8 Installation Guide for Windows Operating Systems for details.