If you have checked and the controller is working as expected, but the Java Console will not launch, you may have an issue with the Java which is currently installed.  You datated that you have re-installed the Domino Server, but htat may not have repaired teh Java issue. You can un-install the server, then rename the JVM Directory in the Domino Directory, and re-install the server.  This will also create a new JVM directory and populate it with an udated version of Java