If you haven't already solved your problem, here's something you might wanna try :
1A. Set CATALINA_HOME variable to point to your Tomcat installation directory.
The startup scripts(startup.bar or startup.sh) are using that directory.
OR
you might wanna try:
1B. go to E:/Tomcat(version number here)/bin using Command Prompt. Then you execute :
>
java -jar bootstrap.jar
2. After that open your browser and type
http://localhost:8080 or
http://localhost If you wanna change your port number
you should use Tomcat/conf/server.xml
Hope that helped.