You can check information in the [Windows Security] dialog box by referring to the following procedure.
1) Press [Ctrl] + [Alt] + [Delete] keys and the [Windows Security] dialog box appears.
2) The logged-on user name, computer name and date are displayed in the [Logon Information] box.
* If you have logged on to your computer with the user name that has not been set to [Full Name], [Full Name] does not appear.
3) Click the [Cancel] button to close the [Windows Security] dialog box.