To log on, hold down the Ctrl and Alt keys, then press the Delete key. This key combination is recognized only by Windows, ...

To log on, hold down the Ctrl and Alt keys, then press the Delete key. This key combination is recognized only by Windows, so pressing it before logging on ensures that you are giving your password only to Windows.    This applies only to your Windows or domain password. Passwords associated with Web pages or specific programs will not require you to press Ctrl-Alt-Delete.
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