I've posted this enough times and so have others -- TAKE BACKUPS OF YOUR SYSTEM BEFORE DOING ANY UPGRADES -- should be second nature.
If people don't do this then EVERYTHING is a total exercise in futility.
As far as W7 vs W10 is concerned - I can't see what all the fuss is about -- apart from W10 offering a BETTER SEARCH, a Nicer menu, certainly better security (built in) and the ability to use Storage spaces you could probably run W10 exactly as your old W7 system.
If you don't like it just SAY WHAT'S WRONG - it might be you are using it incorrectly or whatever -- and if you REALLY don't like it just restore your old W7 OS and carry on and forget about W10.
You don't have to use Tiles or any of that stuff if you don't want to - just delete them from the menu.
I loved how instead of being able to list the programs I frequently use efficiently above right above the start menu for fast access I now had the option to move my mouse up and right a bit into ugly tiles playpen instead which could only be solved by 3rd party software. Forward thinking indeed.
Can't wait for the down, down right, right, hard punch to launch a program update :S
@LeeB, the important thing is the windows.old folder - we can grab your key from it and clean install if required.
Still can't believe "Rollback" doesn't work. !!!!
Of COURSE it does had you taken a BACKUP of the system FIRST, then did your upgrade, then RESTORE back again.
In fact in this situation I'd have also taken a backup of the W10 system for later use if the features you want have been fixed / added --would save the upgrade process from having to be done again.
Using Windows.Old to restore the old OS doesn't always work.