BuddyPress.org

A further q: I have searched but cannot find a clear tutorial or advice on doing a clean reinstall of Buddypress. I have tried deactivating BP, then dropping all BP tables, then reinstalling the plugin etc. and it still doesn’t linkup. I think I’ve got some sort of code hanging around from my local PC files which were copied to my live server. Can anyone show me the right way to start again, and clean out all BP files? Thanks