If you’re feeling overwhelmed, don’t panic. Just click the Disable ‘Get Windows 10’ App and the Prevent Windows 10 
Upgrades buttons and you should be covered. For a little extra protection, click Enable Monitor Mode and you’ll be warned if anything changes. The rest of the buttons might be overkill, but worth using if you’re extremely worried about Windows 10 showing up.
The hard way: Toggle Windows Update yourself, then watch it closely
If you’d rather not rely on a third-party application to stop Windows 10 from installing, you could become hyper-vigilant instead. Head to the Control Panel, then System and Security, then Turn automatic updating on or off.
In the drop-down menu, click Download updates but let me choose whether to install them. With this enabled you can review the updates that are installed on your computer, and make sure none of them are Windows 10-related. Installing security updates in a timely manner is important for your security, so only use this method if you’re willing to sort through the updates and work out what they all mean. You’ll probably end up Googling a few things, even if you are experienced.
Alternatively, you could just uncheck Recommended Updates — Windows 10 is a recommended update, not an essential one, so unchecking that should stop it from installing.
Finally, if you also want to remove the tray icon that keeps popping up, head to Installed Updates in the Programs and Features section of the control panel. Search for update KB3035583, which includes the Get Windows 10 app and nothing else. Right-click it, then click Uninstall, and the icon should disappear from your tray. If the update shows up again in Windows Update, you can right-click it and click Hide to banish it forever.
Free updates stop this summer — hopefully the nags will too
Windows 10 is only a free upgrade until July 29, 2016. After that point, users will have to pay in order to upgrade to Windows 10. The nagging to update, and the automatic installation, might stop at that point (unless Microsoft decides to extend the deadline). Or they might just continue as advertisements.
Windows 10 is a great update, and worth installing. There’s even a 30-day window after trying it where you can restore your old Windows installation. However, at the same time, we realize that your PC means this is your choice. We hope the above information helps you.
Article Appeared @https://www.yahoo.com/tech/don-t-want-anything-windows-131539843.html