Fred_vdp
12 years agoHero+
Re: Lost Product Key
If the game is still installed, the product key should be in your registry. Press windows logo + R on your keyboard, type regedit and hit enter. Then Mass Effect 2 should be located in HKEY_LOCAL_MACHINE\SOFTWARE\BioWare\Mass Effect 2. (I tested this myself and didn't find it, but maybe you're lucky.) The key should be located there somewhere.
Edit: It could be under HKEY_CURRENT_USER instead of local machine, but I don't see it there either.