Hello Kryo; I will do my best; hope this helps.
Read this link on issues all about XP Welcome Screen.
http://www.kellys-korner-xp.com/xp_wel_screen.htm there is lot of good
help on your subject.
Here are a few examples:
A User Account Does Not Appear in the User Accounts Tool or the Welcome
Screen
http://support.microsoft.com/support/kb/articles/q297/2/21.asp
An existing user account may not appear in the User Accounts tool in
Control Panel, or on the Welcome screen. You may also receive the
following error message when you attempt to create a new account:
The account already exists
This behavior occurs because you have disabled the account. Disabled
user accounts do not appear in the User Accounts tool, or on the
Welcome logon screen. You can only access these accounts in the Local
Users and Groups snap-in.
To resolve this behavior, first determine whether an account is not
active:
1. Click Start, right-click My Computer, and then click Manage.
2. Expand the Local Users and Groups node.
3. Click Users.
If the user account is displayed with a red X through it, it has been
disabled.
To enable the account:
1. Double click the account.
2. Click to clear the "Account is disabled" check box.
Windows XP Stops Responding at the Welcome Screen
http://support.microsoft.com/support/kb/articles/q294/4/27.asp
When you restart Windows XP and the Welcome screen is displayed, your
computer may stop responding: neither the keyboard nor the mouse work.
When you restart your computer again using the F8 key, you may receive
the following error message:
System restart has been paused:
Continue with system restart.
Delete restoration data and proceed to system boot menu.
This problem can occur when your computer enters into the Hibernate
mode and accesses a corrupted memory snapshot.
To resolve this problem, select the "Delete restoration data and
proceed to system boot menu" option which enables the computer to
perform a normal restart, instead of performing the restoration process
while the computer is in Hibernate mode.
Logon Name Not in Task Manager or Under Documents & Settings
http://support.microsoft.com/support/kb/articles/q283/1/11.asp
When the Welcome screen is appears, the names that are displayed do not
match any of the names of users' folders under the Documents and
Settings folder or any of the names on the Users tab in Task Manager.
This behavior may occur if you have changed the name of the account in
the User Accounts tool in Control Panel. By doing so, the new name
appears on the Welcome screen, but the actual account name remains the
same. The folders under the Documents and Settings folder and the names
that are listed in Task Manager show the actual account name.
To resolve this behavior, if the display name for a user account has
been changed, you can find out which account the new display name
belongs to by logging on as that user, starting Task Manager, and then
clicking the Users tab.
The user account that is marked as active is the one that is currently
logged on. Also, you can find out which of the folders under Documents
and Settings belongs to the currently logged-on user by right-clicking
Start, and then clicking Explore. Windows Explorer will then start in
the Start Menu folder of the currently logged-on user's folder.
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