Yes folks, it's free and easy to Upgrade your personal desktop computer or laptop from Windows 7 or Windows 8 to Windows 10.
Having successfully performed this on several desktop Windows 7 and a complete re partition and clean reinstall rescue mission on one of them. I can tell you that it is easy, free and a breeze to do in no time at all.
You can perform the Windows 10 Upgrade with a simple download link from the Microsoft website directly to your computer and have it done in less than an hour, or you can save the download to a USB to install on another computer.
Nothing to be afraid of. No loss of files as you have the choice to keep your programs and files or do a clean install. It's a Win all round.
Links have been added to this post but just in case you missed it here it is again.
The links on this page will lead you to the official microsoft direct download site link where you have several options and they will instruct you how to proceed. It really is very easy, no technical experience required.
Below is a screenshot of what the page will look like.