The first step would be to check the forums for a solution to your issue.
If you do not post in the technical forums be sure to drop an email to firstname.lastname@example.org to get our direct attention also.
It is critical that you include the items below in your email to email@example.com for us to be able to help you:
Your system specs usually found here:
Windows -> Administrative Tools -> System Information
Dxdiag report here: Win+R -> dxdiag -> Enter -> Save All Information
A detailed report of your issue
In your best words describe the issue you are having including all details you think would be important for us to know.
Following this guide will allow us to help you as fast as we are able to and get you back into the game.
Thank you for your patience and understanding.