Star Wars Knights of the Old Republic II: The Sith Lords

I can't start Star Wars Knights of the Old Republic II: The Sith Lords. What do I do now?

• Check to see how much room is available on your hard drive to make sure that you have enough free space for Star Wars Knights of the Old Republic II: The Sith Lords to run. It is recommended that you have at least 200 MB of free space after installing the game for the Windows swap/page file and save games.
  
  

• Check to see if you have any other applications running, such as memory managers, screen savers, or virus protection programs.
  
  

• Check that you have the latest video drivers available for your machine. Failure in launching the game may occur because of driver incompatibilities.
  
  

• Make sure that DirectX 9.0c supports the current computer hardware in your system.
  
  

• You may be trying to launch the game on a Windows Profile that does not have Administrator or Power User privileges.
  
  

• Check the Star Wars Knights of the Old Republic II: The Sith Lords CD to see if it is dirty or scratched. The CD-ROM drive may be having trouble reading the CD.
  
  

• You may have a corrupted installation. Try uninstalling, and then reinstalling Star Wars Knights of the Old Republic II: The Sith Lords.