I tried to install postgresql 8.4 in my windows 7 (64 bit). But it fails with following messages in log
Initialising the database cluster (this may take a few min
I got the same result installing "postgresql-9.2.3-1-windows-x64.exe" on Windows 7 Enterprise and the problem get solved when I change the installation path.
postgresql-9.2.3-1-windows-x64.exe
Try to install into "c:\postgresql" instead of "c:\program files\Postgresql"
c:\postgresql
c:\program files\Postgresql
Good luck