My home computer has suddenly developed an additional Microsoft log-on
screen when it's 1st fired up. Any suggestions on how to get rid of it would
be appreciated.
Exactly what do you mean by "an additional Microsoft log-on screen"?
What does it look like and what does it say?
In particular, what do mean by "additional"? What is the other log-on
screen to which you are comparing it?
But if you are simply asking about being required to log on, when it
used to do it automatically, go to Start | Run, type "control
userpasswords2" Select the account you want to logon to automatically.
Then uncheck the box "Users must enter a user name and password to use
this computer."
Or do the same thing with TweakUI.