Set up my new desktop, and it always boots up to an Admin screen that says "sign in," but there's no password; I just click on it and I'm in. How can I get rid of this unnecessary sign-in screen? I looked around online but the various options didn't seem to apply to me, and there were dire warnings that eliminating the admin account you lose all your data, etc., etc. I know this has to be much simpler. Thanks in advance!