If you want to try something completely different, give a Linux distribution (distro) a try. You can typically set those up so they will "dual boot" with Windows, meaning you can select the operating system you want to run when you boot your computer. The advantage, of course, is that you don't have to get rid of Windows so you can try something you may or may not like.
When you start using Linux, one of the first things you'll notice is that there are a lot of distros available. The most popular is Ubuntu, but there are some other great distros out there. All of them are free and it is easy to load one on a USB drive, give it a test drive and install only the one you really like.
Linux is a lot easier to use than you might thing, the OS is free and most of the available software is free and very good.