Indeed. To the extent that I may have helped, you all are welcome.
It's frequently the little things that cause a computer to fail. After all, a computer is run by a bunch of programs that make thousands of independent decisions, as, when, and how they are instructed to do so by the person who wrote the program.
A computer is digitally based. It uses the Binary numbering system. Ones and zeros. On and off. A program is a huge set of tiny decisions that are coordinated based on a comparison of those two states (1=on, 0=off). It's impossible for a human to predict all of the necessary conditions to test for when writing a program. The better programs test for more conditions. And some of those tests actually look for the potential problematic interactions with other programs. When those interactions are anticipated properly, fewer problems occur. When they're not anticipated so well, more problems occur.
That's why Microsoft recommends only using certified software to run under Windows. If it's certified, most of the typical conflicts are anticipated and planned for. The more aggressive a program gets, the more chances there are for conflict, and failure. And Examsoft, by rebooting into a "secure" mode, is pretty aggressive. So we try to head off any unplanned-for conflicts by reducing the potential issues and turning off the other programs that may cause those conflicts.
There's more, but the siren call of my Civ Pro outline is luring me, like an attractive nuisance, into it's cold heartless, deadly embrace, and I cannot resist.