If available, click the Reset My Default Keychain button.In Keychain Access.app, choose Preferences from the Keychain Access menu.Deleting a keychain also deletes all the password data saved in that keychain. If you don't remember your original password, you'll need to delete the keychain. If you don't remember your original (former) account password Re-enter the newer password in the Verify field, then click OK.In the New Password field, type the password that matches your current account password.If you entered the correct password, a new window appears enter the original password again in the Current Password field.Type the former password of the account that you are currently logged in to, then click OK.From the Edit menu, choose Change Password for Keychain 'login.'.Open Keychain Access (you can get to it by choosing Utilities from the Go menu in the Finder).
If you want your default keychain to be unlocked automatically when you log in, synchronize your Keychain Access and account login passwords by doing this: If you change your account's password using your Mac OS X Install disc (or if your network-based account password is changed due to a network admin forcing a password change), your default keychain password (which uses the same initial password as your user account) does not change.
