Unable to log in!!

[Guest]

Hello, I returned to my desktop and it says computer locked down only an
administrator can unlock this computer and a password is required! I never
set one!

 

[Guest]

At starting computer,tap the F8 key,select safe mode,enter as administrator,
for password press enter key.In xp,open users accounts,select,change the way
that xp opens.

 

[anno_triangle]

Well,

Actually, that is not a serious problem. You can reset admin password,
if it is unknown to you using special tools. I myself used Password
Changer in this case, it was found on a data tools set CD imag,e Boot
Disk. That image also included very good recovery, backup and erase
tools. You might wish to give it a glance.
http://www.ntfs.com/boot-disk.htm

 

[Guest]

Password Lost
http://www3.telus.net/dandemar/lostpass.htm

How to log on to Windows XP if you forget your password
http://support.microsoft.com/?kbid=321305