I have previously been able to create HD movies using Movie Maker on Windows 7.  I had to reformat my hard drive and added McAfee Virus protection due to a virus, and now when I try to create the HD movie, I see that the process freezes at 3% (1.3GB memory per Task Manager.).  However, I am able to use the HD files to create a SD movie which plays well on my TV.

Also when I view the Task Manager screen for performance during the HD creation, I noted that the amount of memory used for all of my apps totaled approximately 1.75 GB which included the Movie Maker processing.  My computer has a 3GB memory capacity.

I appreciate any suggestions