Windows 7 and wd tv live problems any solutions

Just got the Wd TV live. trying to stream files off windows 7 pc.  the network connects, I see the folders, I play the video, after 10 seconds, video stops, folders no longer there.  I have done a search and have found about a 100 ways to fix this problem.  Looks like lots of guess that work for certain versions. I would hope there would be a step by step guide for this device and windows.  Need help.  my folders are shared, permissions are set.  WD should have a step by step guide.

How are you connecting to your network, wire or wireless.