If you're using any security software (such as antivirus, firewall) see this
this guide to see if that helps. Sometimes that isn't enough to stop some security software from interfering so you can also try temporarily uninstalling them, restart your computer and then see if PostgreSQL is able to start. If that doesn't work please send us your five latest PostgreSQL log files in a
Support Ticket with your PokerTracker4.log file:
Guide: PostgreSQL log filesGuide: How to Create & Submit a PokerTracker4.log Filenereik wrote:also:
is re-installing postgreSQL an option (at the cost of losing my db)?
Possibly although if you reinstall the same PostgreSQL version to the same place you shouldn't lose your data.