Is your hardware support 64-bit and hardware virtualization
SecurAble is a very useful tool to find out whether your computer support 64-bit OS and hardware virtualization. These features allow you to run virtualization better. Example of usage: XP Mode feature of Windows 7
Below are sample of the screen capture for tested machine
Please download SecurAble from http://www.grc.com/files/securable.exe
Resource and Reference:
http://www.grc.com/securable.htm