Thank you for those tips. But they address a different issue. And that's probably my fault for not being clear about what the situation is.
I have multiple user accounts on the laptop. Only one of them, mine, uses the fingerprint reader to login.
I want one of the other users of the laptop to be able to login, but using their username and password, since they don't have an enrolled fingerprint.
All that displays at boot up is the fingerprint icon, and the instructionst to scan an enrolled finger over the fingerprint reader.
Sorry for any misunderstanding that I have created.