Here is something that you can test. If you go into the Windows Services from the start menu you should see a list of Dynatrace process among the list of all the services running on your machine. Most of them will be set to manual, try starting them and then seeing if all the EasyTravel components will start up.
You can check the Dynatrace logs to see if those agents had issues starting up - they will be in a directory such as: C:\Program Files\dynaTrace\Dynatrace 7.0\log
The application logs might also help but I'm not sure where those are located in an easytravel install.