Steps to fix this problem
1- Uninstall the current Synchronizer installation that just failed
2- Go to: Start menu -> Right click on computer -> Manage -> Configuration -> Local Users and Groups -> Users
3- Delete the postgres user account
4- Go to: Start menu -> Right click on computer -> Properties -> Advanced system settings -> Advances Tab -> under Performance select settings -> Data Execution Prevention
5- Change to the option Turn on DEP for essential Windows programs and services.
6- Restart the computer and try to install ALM Synchronizer again.