Citadel DLC Graphics issues. Black Textures, Black Weapons Models

I just got the Citadel DLC and a lot of the textures of the new content are not showing up, including weapons mods. But the worst (so far) is the apartment, where none of the walls, ceilings or floors are showing up. I'm pretty sure the apartment wasn't carved from a single glistening piece of onyx.

Is there any fix for this?

Here's an example. http://imgur.com/MhsoNfj

Other things: This is a persistent bug. I've tired reloading the save, the game, Origin, restarting my PC, repairing the install through Origin, updating my video card drivers, reinstalling ME3, and trying all the different options in ME3config.exe. It still appears (or rather, fails to appear. Get it?).

I'm running no mods; no texmod, nothing.

In addition to Citadel, I have Leviathan, and all the free DLC. I do not have Omega.

System Specs: ASUS G60VX Laptop Intel Centrino 2 Dual Core Processor 2.0GHz Nvidia GeForce Gtx 260m 4GB RAM

Everything runs fine, it's just that the apartment and all of the new weapons models display as black.