» Tue May 03, 2011 8:24 am
A lot of times this is indicative of a codecs issue.
Use the following utility to reset Windows to use default codecs. READ THE WARNINGS AND DESCRIPTION!! Make a system restore point or export your registry first to easily undo this if desired!!
http://www.newvegasnexus.com/downloads/file.php?id=35868
Good luck.
Oh yeah, turn of, or untick "enable steam community In-Game" to.