Yes, the Windows Operating System disk that comes with the computer, here are several good looks at the process:
http://spyware-free.us/tutorials/reformat/
http://www.cyberwalker.net/faqs/how-tos/reinstall-faq.html
http://helpdesk.its.uiowa.edu/windows/instructions/reformat.htm
http://spyware-free.us/tutorials/reformat/
http://www.cyberwalker.net/faqs/how-tos/reinstall-faq.html
http://helpdesk.its.uiowa.edu/windows/instructions/reformat.htm