Problem with repeated "Configuring Microsoft Office 2010" messages.

I am trying to resolve a PC problem for a relative. He is running Windows 7 and MS Office 2010. Whenever he fires up Outlook he gets a MsgBox advising him that it is "*Configuring Microsoft Office 2010*". If he allows it to run to completion it reboots the PC but reappears when he opens Outlook again it reappears. He can (sort of) circumvent the problem by clicking on the "Red X" in the...