Thanks everyone for weighing in.
Here's my situation: I have a 2012 Dell XPS 8500 that came with Win 7. When free Win 10 upgrade came out, Microsoft did one of their scans and said my machine was ready to go with the update.
Dell, however, said the 8500 wasn't supported for the Win 10 update. I decided to go for it because it was time time buy a new computer for work anyway, and I would downstream this one to be my DAW. Plus, I could roll back to Win 7 if I needed. Well, so far (over a year), everything's been working fine in Win 10, except for the occasional PITA things MS pushes on Win 10 users (read: forced updates and its headaches).
However, I'm afraid to do Dell system updates (BIOS, chipset, drivers, etc.) because as far as Dell is concerned this is a unit with Win 7 on it, not Win 10, and the whole thing could end up in a nasty knot. Guess, I'd have to wipe everything and start over anyway...
I have a USB that will set everything back to factory fresh. Got it from Dell. I also believe Windows has extended support for Win 7 until 2020.
https://support.microsoft.com/en-us/help/13853/windows-lifecycle-fact-sheetIn planning for a new SSD for this unit, it sounds from others as if a fresh OS install is the best, cleanest, most ideal route. I can buy a copy of Win 10 to do the fresh install onto the SSD, or I can rollback to factory fresh, Win 7, as it was in 2012 when Dell shipped it. I'd install that on the SSD, along with Sonar and related.
Not sure what route to take, if I do a fresh install. The other option is to use the Samsung migration tool and move everything to the new Samsung EVO 850 SSD, although as someone said earlier, then you move all your old system ghosts with it.
Hmmm...