Mass Effect 3 Won't Launch [ Edited ]

[epidizzle]

So I just downloaded "From Ashes" DLC and I tried to launch ME3 in Origin, but it won't launch. My computer looks like it's loading at one point, but it doesn't actually launch ME3.

I've completed the game twice and I have a bunch of other DLC with zero problems, so that's led me to assume that it's a problem with the From Ashes DLC as the game stopped working immediately after I bought that, but I can't find anything online that helps with this specific problem.

Any help would be hugely appreciated!

NB: This is on PC, not console.