Are you using the simple logon screen or the classic logon screen? One reason
why a Windows installation might start asking for a password after being set
up for automatic logon would be if you added another user. It's even possible
that another user might have been created by installation of some type of
software and resulted in this happening.

However, Windows shouldn't create its own password for the account. I hate
to ask it, but this has confused many folks before -- you did try logging in
to the account by leaving the password blank, right?

Another possibility would be that someone else logged on to your system and
created a password for that account.

Just throwing out some ideas. I think those are the most likely candidates
for causing what you're reporting.

"David in Winnie" wrote:

> I installed Vista on my main pc. When I went through the setup, I chose not
> to use a password to logon. I went to logon a few days later and it asked me
> for a password at the logon screen. It has locked me out. I have tried
> booting up in safe mode to try it that way, but the Admin account is not
> enabled and it says my account name and/or password is incorrect. I have
> sinced then installed it again on another hard-drive in the same computer
> just so I could access my files. Is there a way to go in and fixed my
> problem so that I able to logon my original installation?
> --
> Pcguy