I recently had to reinstall my OS, and I've got a couple games on origin, and Origin still seems to be the only company left in the proverbial stone age of not being able to auto detect installed games (and thus...wants to re-download and reinstall them)... apparently "they're working on a workaround" but windows' registry is a complicated thing to deal with (see
EA Forums ) and yet, I remember being able to manually detect games on impulse back in like...2009
if its any help... my Origin is installed at D:\Windows7\Origin
and the directory it's pointing to (but can't read from apparently) is D:\Games\