Unable to connect database

[PitbullRiga]

PostgreSQL is instaled on C:/xxx but data base on F:/data . When I reinstal pg9.0 i choose same /data destination as before - F:/data. http://postimg.org/image/vhybs4rv3/

[kraada]

Right click the data folder, click Properties, and go to the Security tab. Do you see the postgres user in the top of the window?

[PitbullRiga]

Yes. postgrs has full control.

[kraada]

In the pg_log folder do you see a file for the most recent start attempt? If so, what's in the file?

[PitbullRiga]

2013-09-02 18:52:10 BST LOG: database system was interrupted; last known up at 2013-08-27 14:10:21 BST
2013-09-02 18:52:10 BST LOG: could not open file "pg_xlog/000000010000001B000000CF" (log file 27, segment 207): No such file or directory
2013-09-02 18:52:10 BST LOG: invalid primary checkpoint record
2013-09-02 18:52:10 BST LOG: could not open file "pg_xlog/000000010000001B000000CC" (log file 27, segment 204): No such file or directory
2013-09-02 18:52:10 BST LOG: invalid secondary checkpoint record
2013-09-02 18:52:10 BST PANIC: could not locate a valid checkpoint record


This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

2013-09-02 18:52:10 BST LOG: startup process (PID 3844) exited with exit code 3
2013-09-02 18:52:10 BST LOG: aborting startup due to startup process failure
2013-09-02 18:52:11 BST FATAL: the database system is starting up

[kraada]

Please check your antivirus to see if it quarantined any files from the pg_xlog folder. Also check to make sure you didn't delete them accidentally - if you did, then restoring them (or removing them from the quarantine) will fix things -- if not, you are going to need to delete the data directory, uninstall PostgreSQL and start from scratch.