Hotkey:
Select Start > Settings > Control Panel, then double-click HP Logon Manager to display the Specify Logon Information dialog. Select Enable Autologon and provide the name, password, and domain (optional) for the default user.
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=120&prodSeriesId=439748&prodTypeId=12454&objectID=c01467769