Trying to install APM Database Postgres only in silent Mode, it seems that PostGresSQL service installation failed, no PostGreSQL service appears in windows services list.
Any Operating system
Any APM version
Open the response file and disable the below option if you are installing a new Postgres DB instance.
# Set validateDatabase to true if you want to validate the existing APM database and # create new schema.
For more information, please refer to the Wiki APM documentation site : Installing CA APM > Installation and Upgrade > Launch the Installer > Install Introscope in Silent Mode chapter.