I am glad I still have a copy of Windows 7 Pro.
I hated Windows 8!!
The thing I hate most about Windows 10 is the automatic updates that you can no longer switch off.
I said I bet there will be problems with this and yep I guessed correctly....
http://www.forbes.com/sites/gordonkelly/2015/08/08/windows-10-forced-updates-causing-endless-crash-loop/