I found a file in the bin folder entitled Tomcat7.exe and I double clicked. A screen came up and quickly disappeared. I am running Windows Vista and I shut down Windows UAC (User Account Control) as recommended on the Tomcat website but I guess this didn't do any good? What should I try next?
Yes, I had but with the same result. A small black screen appears and disappears quickly.
Open a command prompt window, navigate to the bin directory containing startup.bat and execute it.
If another window opens and immediately closes, edit the startup.bat file as follows - where the last line now says "start", substitute "run".
The reason being that "start" executes catalina.bat in a new command prompt window which will close if there is an error. By using "run" execution will continue in the open window and you can see the error report.