Windows 10 has been 'offered' to Windows 7 and 8 users as a 'free' upgrade. This upgrade has been sitting in your computer in the Windows update 'tray', click on 'control panel', and then 'Windows updates' and 'view available updates', click to view the available updates and you will see KB3035583 which is marked 'important', that is the box to its left is ticked, if you leave the box ticked W10 will automatically install on your computer after 29th July next year. If you wish to prevent this happening and/or you don't want W10 un-tick the box and then in 'control panel' then 'installed updates' and scroll down the list until you come to KB3035583 under the title Windows updates, click to highlight it and then click 'uninstall' and it will disappear and not come back every time Windows update runs. You need to un-tick it as I previously said otherwise it will come back. No-one needs to or has to 'reserve' W10, you can within the time frame download it at any time but before anyone does I would advise them to read reports and reviews from those that have as there have been and are many issues with it.
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