where are my playlists, contacts, voice memo's and iphone pictures

windows desktop crashed in middle of iphone 3g ios upgrade to 6.0. not sure hard drive is accessible. preferences were set in itunes to read music from an external hard drive. are my playlists, contacts, and voice memo's on the external or on the crashed hard drive? i do not see any recently dated itl files on the external. second question. the ios upgrade made me restore my iphone and could not complete because i had my iphone pin locked. getting error saying it cannot be activated. how do i get my phone working again with my playlists and contacts that were on there. if the ios upgrade forced me to restore is everythign gone? if so, apple, that'd really suck.