I have had a Lenovo ideapad with intel core i5 for the past 14 months. How do I update/change the password?

Are you talking about Windows password? If this is the case, for Windows 7 take a look at this link: http://windows.microsoft.com/...=windows-7
and for Windows 8.1 take a look at this one: http://windows.microsoft.com/...e-password

Hope that helps.
Boogieman_WD