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If you enter your password incorrectly or Click on Continue Log in, you will continue to receive prompts asking for you to type in your login keychain password. This message will not go away until you do.
You If  you need assistance with updating your Mac OS keychain, you
can contact the Information Technology Help Desk at 410-677-5454 for assistance. 

Please remember that the keychain(s) may also contain saved credentials for web sites, Wi-Fi networks, and various programs. Resetting your keychains will cause these programs to prompt you for a name and password the next time you use them as if it is the first time you've used them.