Run a memory test I'd say. Segmentation faults just mean it tries to access memory that doesn't exist. That might also point towards corrupted Windows files, or maaaaaybe a bugged revision, but that's unlikely.
Take out half of the memory, try again, if it still fails, try to remove the other half (while placing the first bits back..). You can find the broken memory card like that. It might also be a broken memory attachment location of course. Or a messed up CPU.