My Postgresql is inaccessible in Windows 8.1

Good Morning,

Constantly my Postgresql is inaccessible, recording the following
message in the log.
I'm using Windows 8.1 and PostgreSQL 9.5

2016-08-02 17:05:59 BRT FATAL: the database system is starting up
2016-08-02 17:05:59 BRT LOG: database system was not properly shut
down; automatic recovery in progress
2016-08-02 17:05:59 BRT LOG: invalid record length at 0/42C0148
2016-08-02 17:05:59 BRT LOG: redo is not required
2016-08-02 17:05:59 BRT LOG: MultiXact member wraparound protections
are now enabled
2016-08-02 17:05:59 BRT LOG: database system is ready to accept
connections
2016-08-02 17:06:00 BRT LOG: autovacuum launcher started

2016-08-03 08:18:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:19:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:20:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:21:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:22:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:23:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:24:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:26:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:28:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:30:44 BRT WARNING: worker took too long to start;
canceled
2016-08-03 08:31:45 BRT WARNING: worker took too long to start;
canceled

What can be wrong?