The darpan-aero screen savers are a little different from the usual freeware that you would find. They come complete with an installer that not only puts the screensaver on your desktop but also acts as a search and find tool. This makes them perfect for any computer with Windows 7 installed. You can download the screen saver free download directly from the darpan-aero website. There is also an option to get the software from their other sites that cost money.
I do recommend giving the freeware a try first especially if you are new to using screensavers. But if you are not satisfied with the free version or you can't get it to work with your Windows 7 machine, you can spend a little money and buy the complete version. The software is relatively cheap and it works perfectly on all Windows machines. The good thing about Windows 10 is that even if you don't like the screensavers that are included on your desktop, you can always download some that you want. I would suggest screensavers with a lot of colors and unique designs.