Things to make you say, "Hmmm..."
I was testing a "Live DVD" of Linux Mint 18.1 and it appears to have trashed the HD of a WIN7 machine I use for making backups. The machine "hangs" in the startup screen "starting Windows" with the HD light steady-on.
First run-through of the built-in Windows repair process, failed.
Sigh. I've never had such a problem with a "live" disc, before! :( This distro of Linux appeared to work flawlessly from the DVD.
Thank the LORD for backups... looks like I'll be forced to restore that HD.
Oh! Lo and behold... Windows woke up, and finished booting! :)
Time to poke around a little!