Right clicking on any application results in a windows explorer reset

Yea, Windows doesn't like you messing with system files while it's live, which is why I told you about the other option which is to move it via command-line while you're not booted into Windows.

The repair install should have fixed any type of corrupted system files. If you could take a screenshot of your programs installed via Control Panel -> Programs and Features, that might help us identify something else going awry.

If you read through the Tutorial of a Repair Install, you'll see that you should skim through the Windows.old folder to see if there's anything you still need and, if not, delete it to free up some lost space.

It doesn't appear there is anything installed that looks suspicious enough to merit why your machine is still acting up. At this point, I would save all of my game data and go with a complete clean reinstall. It sounds like we're going to end up going down multiple rabbit holes since nothing is pointing to a source of the problem by now. It's hard to say how or why this occurred when I wasn't there when it started to try and somehow link the result to the cause.

Saving your saved game data shouldn't cause any issues to persist past the format, if you wanted to do so. So, I wouldn't worry about that. Good luck with the clean reinstall.