Pro/ENGINEER Wildfire 4.0 is not supported on Windows 7, however, by updating your graphics driver to the latest available by the manufacturer, many users have been successful in running it. Other things to try are: - Be sure that you have a network card enabled. The Pro/E license requires an enabled network card. - Be sure that Internet Explorer is enabled. - Try temporarily turning off your antivirus software during installation. Hopefully these suggestions will help. Regards, Adam