This kernel requires the following features not present on the CPU:pae HD

In this video I show you how to enable PAE in Virtual box. You will receive an error "This kernel requires the following features not present on the CPU:pae" if the VN you are trying to start is not enabled to use PAE/NX For more information on PAE see the Wiki page below: http://en.wikipedia.org/wiki/Physical_Address_Extension#Operating_system_support