d3dx9_36.dll Missing error, when trying to run the game Dragon Age: Origin

 

But whenever I try to run the game I come up with the error:

 

"C:\Windows\system32\d3dx9_36.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support."

 

I'm finding it incredibly frustrating, I've searched the Web for hours to find a way to fix it. What I have done so far is:

 

I'm not sure if I've tried everything possible because, I am not incredibly good with computers. So I would really appreciate it if someone could help me. Even if it turns out I can't play it, I would just like to understand why.

 

Thank You :-)