Success. You can now start the database server using:
"C:\pgsql\\bin\postgres" -D "C:/pgsql/data"
or
"C:\pgsql\\bin\pg_ctl" -D "C:/pgsql/data" -l logfile start

C:\pgsql>"C:\pgsql\\bin\pg_ctl" -D "C:\pgsql\/data" -l logfile start
server starting
C:\pgsql>cd C:\pgsql\\bin

C:\pgsql\bin>psql.exe -d postgres -p 5432 -U Admin
psql: FATAL: the database system is starting up

to wait till 15 min database server is not starting
how could i solve this database system starting error

What does the logfile say?

hi shammat,
the log file will say like this

LOG: database system was shut down at 2011-05-07 10:50:51 IST
LOG: database system is ready to accept connections
LOG: autovacuum launcher started
LOG: server process (PID 3404) was terminated by exception 0xC000013A
HINT: See C include file "ntstatus.h" for a description of the hexadecimal value.
LOG: terminating any other active server processes
LOG: statistics collector process (PID 1724) was terminated by exception 0xC000013A
HINT: See C include file "ntstatus.h" for a description of the hexadecimal value.
LOG: all server processes terminated; reinitializing
LOG: database system was interrupted; last known up at 2011-05-07 10:50:51 IST
LOG: database system was not properly shut down; automatic recovery in progress
LOG: record with zero length at 0/4FF8D0
LOG: redo is not required

You should post that to the Postgres mailing list.