Cousin getting an interested graphics card error

Ok, so we're questing in Nightfall and arrive in Wehhan Terraces. We're about to move on and we do however, the moment we zone into our personalized zone he gets disconnected because of a "GW has encountered an unrecoverable graphics driver error and must terminate". Now he can zone ANYWHERE in Tyria and the previous areas we've gone to in Elona with any character. Plus he doesn't have a videocard (he has an integrated one which works well for him).

So what could be causing this?

Maybe the card just had a spazz. Not a technical term but it happens. Should be fine, maybe.

But, why only that area? He still can't get into that area but he can zone anywhere else in the game that he's uncovered.