I've just had to install windows 10 again as the new latest update or whatever is called totally wouldn't install and I tried everything.
the old OS has been on there since 10 came out and the saved backups were over 51 gig. but now with everything re-installed
Windows is about 15 gig in size. and about 200% faster, the old OS was fast but less than a second to come out of hibernate now
with the new OS on, wish i had done it sooner
Because everything is now cloud based it was a doddle to get everything back up and running and synced