hey guys i think i need to re-install windows on my system(why?- system un-responsive even after uninstalling several games n other unnecessary stuff. even did a Kaspersky deep scan ...still nothing....no good) so if there is a way to make a physical back up of my bf3 Back to karkand DLC which i can install later on, please let me know. i just don't want to download 4 GB all over again.