http://support.microsoft.com/default...b;en-us;316134
You Cannot Log On to Windows XP After Running the Out-of-Box Experience
The information in this article applies to:
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
This article was previously published under Q316134
SYMPTOMS
You may not be able to log on to your new Windows XP-based computer, or a computer in which Windows XP was installed from an installation source created by your administrator with Sysprep, after you run the Wizard, also called Out-of-Box Experience (OOBE), that runs when you first turn on the computer. You may also receive the following error message
System error lsass.exe:
When trying to update a password the return status indicates that the value provided as the current password is not correct.
CAUSE
This problem occurs if your computer is restarted during the Wizard (OOBE). If this occurs, OOBE cannot flush the Machine registry key before the computer is restarted.
RESOLUTION
To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
322389 How to Obtain the Latest Windows XP Service Pack
To resolve this problem, reinstall Windows XP using the Recovery CD provided by your computer manufacturer or the installation source provided by your administrator, and do not turn off the computer or restart it during the Wizard. If your computer automatically restarts during the Wizard, contact your computer manufacturer or administrator for help to resolve this problem.