Trying to install SugarCRM 6.4.5 and even tried 6.5 - on my laptop

Have Windows 7, PHP 5.4, Apache 2.2 and mysql 5.5

In the screen to specify the DB details, getting "Cannot load DB manager"
and the install log says - installerHook: Could not find custom/install/install_hooks.php

(the customs directory has only index.html) and the install directory is not there

Have ensured the following

- Session is working
- permission is there to write the directories
- variables_order = "EGPCS"

Have Windows 7 on my laptop