How can I create a system image in Win 7?

I am running Windows 7 Professional and would want to create a system image to backup all the files in my computer. I don’t have any third party utilities to do this. Is it possible to create one in Windows 7? If so, How can I do this? Can I save this to any disk so I can use it in the future to recover from any crash? Please send me step by step instructions. Thank you in advance.
