Updated 3 laptops.
Bricked one. My boy salvaged it. Runs better than ever now.
Nearly bricked another one (my daughter's). Rolled back to win7 automatically so will try again (if she let's me within 10m of it)
And the third laptop (old TOSHIBA) wasn't compatible so no harm done (yet).
So far 100% failure rate.
Having said that my notebook flies now. Haven't plugged in the mount or any camera yet so I don't know about the various drivers.
With my current track record this week I'm a little apprehensive plugging any USB cables into it.
Might give it a couple of days when I decide my life is too simple again....