Recording Problems

[Laz0rcat6]

Hello, I am a YouTuber who likes to play horror games. I have tried uploading amnesia videos but usually the screen goes black 1/3 of the way through and resumes at around 2/3 of the way it. I render the footage with sony vegas pro 11. When I am editing the footage it seems fine but after upload the error occurs. I know it's possible to make this work but the question is how.

Here is an example of this: http://www.youtube.com/watch?v=V6akY8I7z...ature=plcp

Screen goes black from 4:48-9:07

It started when I reset the recording but i'm not sure if that is relevant.