Depends on what version of XP you have.
The Administrator account exists in Windows XP Home Edition, but it does
not typically appear on the Welcome logon screen. In Windows XP Home
Edition the Administrator account is not displayed in User Accounts
unless the computer is in Safe mode. You have to boot into Safe Mode to
access the Administrator account in User Accounts.
Start | Settings | Control Panel | User Accounts
To start the computer in safe mode
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/boot_failsafe.mspx
Also see this...
Error Message: Unable to Log You on Because of an Account Restriction
http://support.microsoft.com/?kbid=290109
[[On a Windows XP Professional-based computer that is a member of a
workgroup, you have the option of using the friendly logon interface as
opposed to the classic Windows logon interface. If you add a second user
that has administrative privileges, the built-in Administrator account
does not appear during the friendly logon method.
RESOLUTION
To resolve this problem so that you can access the original Administrator
account:
1. Press the CTRL+ALT+DELETE key combination twice during the friendly
logon interface to use the conventional Windows 2000 logon interface.
2. Restart the computer in Safe mode, or log on remotely by using Remote
Desktop and the Autologon feature of the Remote Desktop Client. ]]
from...
Original Administrator Account Does Not Appear During Friendly Logon
Method
http://support.microsoft.com/kb/281992
--
Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
In Rosebud <
[email protected]> hunted and pecked:
I recently added a user account, made it a system administrator, changed
the original administrator account to a "limited" user acct., then
restarted the computer. The new user acct. does not show up on the user
acct screen, and now, since the other acct was chgd to a limited user, I
cannot even get into any place where changes or help menus can be
accessed. Help! It seems I am "dead in the water" here.
R