Can you please try and keep everything in a single thread as you are regularly reporting this issue and in
this thread I asked if you had more than one PostgreSQL version installed and you said you had v.8.4 (as per your screenshot here):
C:\Program Files (x86)\PostgreSQL\8.4\data\
However in
this thread you included
a screenshot showing that you had a PostgreSQL here:
C:\postgreSQL\data
Is there a postmaster.pid file in that directory? If you open the 'PG_VERSION' file with notepad what version does it say this is? Do you see more than one PostgreSQL in 'Control Panel -> Programs & Features'?