Thomas BLETON replied the topic: Service Web Analytics Tomcat 7 won't stop
Windows services may take a while to stop. It is sometimes necessary to close / reopen the Services window, too. This can explain the message "Le service démarre ou s'arrête. Faites un nouvel essai plus tard".
=> Close the "Services" control panel window, wait for a minute, and retry.
Concerning the reason of the crash, maybe you will find information in the Tomcat logs.