If the experience index does not want to run to check your video card, so far from what you have seen, it just means that whatever software they use to benchmark the card has issues with your setup. Does not mean that anything else you use has the same issue, or ever will.
If your movie and game tests are working well, don't sweat the exp. index not running. I'm sure you can possibly run into some other thing that has issues with your setup, but deal with that when you run across it.