|Sorry, after a review, I see you did not say SP2 as I recalled. At any rate, any machine running XP should be running SP3 and the post SP3 updates. |
How do you know the issue is not VLC or a region issue? Especially the region issue. You can change the region settings ONLY 5 times, then it stays at the last setting.
Without more knowledge on the source of these DVDs we can't say. Ask your friend if they ever changed the region.