Start Outlook with the /select switch and specify your Inbox as the initial
folder to display.  Click Start>Run and enter

outlook.exe /select outlook:inbox

in the Open field.  Make sure you include the spaces and punctuation.  Click
OK.  Now, right-click on the root of your folders and select Properties.
Select the Home Page tab.  Click Restore Defaults.  Close Outlook.  Wait a
couple of minutes.  Try to start it normallly.  What happens?