It sounds like something is stopping the PostgreSQL server - do you have a firewall or anti-virus that might be configured to do this? PostgreSQL does not shut down on its own.
Before Starting PT3, i went to "services.msc" and the service "PostgreSQL server" was started. I didn't change my firewall (windows firewall) and i ' m using avast antivirus. Both makes automatic update.
Is there a way to see if Firewall/anti virus is configure to stop PostregreSQL server ?
I haven't heard of a problem with either of those two pieces of software to date that sound like what you are experiencing.
Click Start --> Control Panel --> Administrative Tools and go into Event Viewer - do you see any errors in the Applications section relating to PostgreSQL?
That is very strange - could you create a support ticket for this issue requesting remote assistance? Once we can connect with you directly we should be able to figure this out more quickly than going back and forth further here on the forums.