Hello Imtiyaz,
Since this is fresh installation, log analysis would be helpful.
Still, check Environment Variable JAVA_HOME is set properly. It should point to the 64 bit JAVA.
In addition to this, please refer below SAP KBA: 1873810 - After fresh installation / Patch update SIA and Tomcat is not getting started in BI 4.0.
http://service.sap.com/sap/support/notes/1873810
Regards,
Mahesh