User blog comment:Oskar 73/Is there an effective and coherent ME1 Guide?/@comment-78.8.159.217-20130430143308/@comment-7100064-20130501185243

I access my ME1 and ME2 via steam. I started with Vista and Upgraded to Windows 7. If your game is not working it could be possible to add the cdkey to steam's client to unlock it that way. Then it could be able to run through them. Only drawback is it will use steam's client but it's a way to work around.

I do not know if you can get a downloadable version of ME1 or ME2 by also adding them to Origin's client. To give you can idea this was a kind of work around to get Diablo 2 & It's expansion to work on Windows 7 PC by adding and downloading the game from Blizzard's games list.