Re: dragonage 2 digital download pc
You need to install the EA/Origin client on your new machine and log-in using the same account as you originally used to register the game.
Then go to "My Games" and you should see DA2 in the collection. When you hover your mouse over the DA2 image, there'll be an option to download and install it. (Not sure, but you may need the product code again.)
Good Luck!