Hi Devon,
I don't know how you produced the Diagnostic file, certainly not Start-Run-type "dxdiag"-enter
Not to bother, the first thing I noticed with it was a warning that your computer was experiencing excessive paging. This is when your computer runs out of memory and has to shift everything around on hard drives which is very slow.
I also noted that you are using a Notebook. Editing HD video on a notebook is not easy accept maybe for some of the latest Sandy Bridge notebooks just released in the last month or so.
Editing HD video is about the most stressful thing you can do on your computer.
So as to how to help you.
1. Do a cold boot, that is "shutdown" your computer then turn it back on, not just a re-start.
2. Close down all other programs running on your computer, anti virus, firewall, etc (make sure you are not connected to the net at the time) I see that it says you are running Apple Mobile Device on a HP computer, I don't know enough about computers to know what this is but if you could turn this off also it may help.
This will at least free up some of your ram. I would say though you are hitting the wall as to what your notebook can handle.
Cheers
Robert2 S
My youtube channel====> http://www.youtube.com/user/relate2?feature=mhsn