The Yahoo! password reset option allows you to reset your password if you have forgotten your Yahoo! password or if your account has become compromised. There is no link to the password reset option from Yahoo! homepage. However, you can access the password reset option directly from the Yahoo! signin homepage.
Go to the Yahoo! homepage.
Click the "Sign In" link located at the upper right corner of the website.
Click the "I can't access my account" link to reset your Yahoo! password.