Game does not recognize DirecX. Can't launch.

Hello. 

I am having a rather strange problem with launching Mass Effect 2. When I tried to launch it for the first time, I got a pop up telling me that the game required the latest DirectX to launch.

The problem is, I'm running windows 8, which already has DirectX 11. I tried searching for updates in windows update, but it was up to date. I tried dowloading and installing the DirectX linked in the pop up, but since its for Windows 7 and bellow it would not launch.

Additional information:

I have played several games that required DirectX with no issues whatsoever before in this computer.

I bought this game on Steam.

I am running Windows 8.1.

My computer is an ASUS G750JX-MBS1-H.

Please help. I've been searching for a solution all weekend long.