Jul 20 2014 09:46 AM
Looks like the virtualization is not enabled in BIOS. here is one way of enabling in BIOS.
Open BIOS during system startup -> Goto "Advanced" -> Virtualization and select "Enabled" if its not so.
Also when you open the Virtualbox you can goto "Settings" -> "System" -> "Acceleration" and select both the options available in "Hardware Virtualization" section.
Let me know if this works