In the event you find outlook wont open, or presents you with errors, you might want to try to open in safe mode, before getting too agressive, reinstalling or replacing your outlook profile.

To do this, simply do the following:

click on the start button
select run
type the following command outlook /safe

If you do not see the RUN box, you may need to make it visible first.

Simply right click on the start button
Select properties and left click
Press the customize Start Menu button
scroll down till you find the box titled run command
Check the box and save your changes
You can then proceed with the above instructions