A123x123 I have moved this discussion to the Premiere Pro CS5, CS5.5, and CS6 forum. The users in this forum may have additional suggestions you can try to resolve your current launch difficulties.
For some general troubleshooting steps you can perform please see Troubleshoot system errors, freezes | Windows | Adobe software - http://helpx.adobe.com/x-productkb/global/troubleshoot-system-errors-f reezes-windows.html.