You should execute it from a batch file like:
rem drives C & D will get a forced cache flush.
rem Mark Russinovich's systool "Sync" can force flush drives as needed
rem Sync can also quickly "safely eject" removable media
rem better than windows 10 can - use " /e" switch after the drive letter.
I keep a batch file on my desktop always ready to flush my boot and data drives.
When a project gets stuck rendering, that usually indicates some corruption in the project.
At what percentage the project gets stuck. Indicates where the corruption exists. In your case getting stuck at 100 percent makes the detective work relatively simple. If the problem is indeed corruption, we know it’s at the very end of the video.
Most of the time when a video gets stuck rendering, it’s at 67 percent or 23 percent etc. so pinpointing the location is slightly trickier.
That being said, considering that this video is only 9 minutes in duration. I would try rendering 97 or 98 percent of the video. See if it will render to completion without any problems. To do that, have the timeline zoomed out so you can see the entire project on the timeline. Use the red and green timeline indicator sliders to select 97 or 98 percent of the video. With the cursor hovering in the highlighted blue area, right click and select> produce timeline selection as. And see if you can produce the video.
If you can, you know the trouble exists in the remaining section of a video at the end.
It would be a good idea to place a marker at that point in the timeline.
If you have a fade to black, or a fade transition on the end of the video. That may be the problem. You can try removing it and just producing that remaining section of the video. If it produces, you’ve probably found the problem.
If not, it could be the audio. Try cutting the video at that point “If Required”. And separating the audio from the video. Then, move it out of the way down the timeline somewhere. And try producing that small section of video. If it produces, then you know that audio is probably corrupt. And will have to be changed.
If that doesn’t work, If there is an image in that area, I think you get the drill.
That’s the key, one way or another, you have to isolate the corrupt part of the video and correct the problem. There’s really no magic bullet, just a little diligence to find the problem.