How do you roll back?
Since you don't sound like you are a 'technical user', I would suggest you find someone near you who knows and pay them to do it.
If you’ve had W10 upgraded for more than 30 days the Revert button disappears and you have to do a full install of your previous Windows operating system to get back to Windows 7 or Windows 8.
CGato
My wife has an HP desktop computer. She called their customer service, told them that she wanted to roll her computer back to original manufacturer’s settings (including Win7 operating system), and they sent her a recovery CD to make that happen. She backed up her files on a portable hard-drive but it wasn’t necessary, her files were all there.
When I downloaded 10 to my other computer is said you could go back within 30 days... but there’s nothing about how to do it...