That's a shame, Justine. Not an oft-reported problem, so it's likely there's a setup or resource issue with your PC.
If you take the time to attach a dxDiag file to your next post, folks here may be able to help diagnose the issue. See the "Welcome" sticky at the top of this forum. PARTS A and B.
No personal info is revealed.
Review this thread, if you haven't already done so. If you attach or upload your Mp4 to a server and link it here, others will test it.
This message was edited 2 times. Last update was at Sep 02. 2014 03:51