Cannot Log in to windows

[Guest]

I turn the computer on and once it starts up it goes to the screen where
there is normally an icon to click for the user you wont to log in as.
However, there are no user names/icons on the screen it just says welcome and
has the "Turn Off Computer" in bottom corner. I tried to enter Safe Mode to
see if Administrator name appears as it says in the Windows XP manual... but
no user names appear there either. Is there any way I can login?

 

[Guest]

Is it possible that windows detected your copy to be illegitimate and has
barred you from entering? In any case, you can insert your windows cd,
select install, then select repair. this will repair your windows......

 

[POP]

I turn the computer on and once it starts up it goes to the
screen where there is normally an icon to click for the
user you wont to log in as. However, there are no user
names/icons on the screen it just says welcome and has the
"Turn Off Computer" in bottom corner. I tried to enter
Safe Mode to see if Administrator name appears as it says
in the Windows XP manual... but no user names appear there
either. Is there any way I can login?

Have you tried simply pressing Return at those prompts?

Pop