Intermittent problems are really hard to track down. If you see anything in common when the problem occurs, it might help. Like does it happen during restarts, or cold boots after being completely shutdown?
If the error seems to be related to your Video Editor, maybe it is involved in causing the problem.
The message seems to be saying no User Interface is found. Perhaps it is referring to a user profile. But that should be there unless it is being corrupted.
Memory can be involved, since most of the OS is put in memory for use. During sleep or hibernation, files are written to the drives for use later. Page files are used all the time, which are written to hard drives. If the memory was having a problem, it might show up a corruption on the system. Most folks suggest running a memory test for a longer period that just one or two scans.
If you ever get a real Blue Screen, there might be a dump report made that could point to your problem.
If you check the Event Viewer, there may be some entry that could help track down a problem. If something is happening fairly often, it might be related.