To any users who see that sort of icon advertising upgrades to windows10, if you don't want to do it, don't let anything force you.
Remove KB3035583 and those other updates I mention in post#2, then set your updates to "check automatically but ask me whether I want to download them", then only install updates which fix security vulnerabilities and any other updates for which you read the description and think "that update would fix a bug I've actually been suffering from". Also make sure to get rid of the $Windows.~BT folder which might have appeared on your C:\ drive and you might also need to delete any files found on your system called GWX.exe (however deletion of these requires fiddling with permissions first and, as you'll be editing what some regard as system files, it's essential to make sure you have a system image ready before you do this, incase it goes wrong). You can also take preventative actions before any kind of "upgrade to windows 1" prompts appear by followng these same steps.
To users who do want to upgrade, still probably better to take active action and do it when you want (you have until june/july 2016) rather than let yourself be pushed at whatever random and possibly inconvenient time a GWX related prompt may show itself.
Edited by rp88, 19 November 2015 - 02:00 PM.
Back on this site, for a while anyway, been so busy the last year.
My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB