vmdk fails to kick installer

Loaded the vmx file, along with vmdk as hard drive and 40GB file as another hard drive.
Loading process failed. So, went to boot manager > boot options menu, selected efi SCSI Device 1, and started over again.

VT-X/AMD-V acceleration error

When searched in the virtualbox discussion board, found this URL
http://forums.virtualbox.org/viewtopic.php?f=7&t=16951&start=0
What to do?
In the BIOS, enabled AMD-Virtualization.
error is gone