Missing DLL Error

I've just bought Dragon Age Origins from Origin and I can't play it because of an error. 

Missing DLL: [NxCharacter.dll] Error: 0x7E

I tried all the solutions that I've seen online: updating PhysX (which I already had updated before I bought the game), changing files from one folder to another, compatibility issues...

None of them worked. I don't know what else to do. Please, help me. 

PD: I don't know if this helps but I play on a MSI GE72 7RE Apache Pro with a GEFORCE 1050 Ti.

Thank you in advance!

[Admin - updated thread title to reflect issue and for better search results]