Ok, I would go into the control panel and then programs and features and uninstall all versions of Java. Once this is done, go to the Java website and download the latest version, or a version you feel comfortable with. Download the 64 bit version if your using 64 bit windows. Once installed, in the control panel, go to Java. In the Java control panel select settings at the bottom of the window, in the next window select delete files, then ok. Now try to launch.