Windows 10: How do I block advertisement websites?

I believe I got scammed after reloading Windows 10 by a company that I was transferred to while trying to reload a program that had been deleted during 'reload'. I believe the 'register' was changed. My 'Block' feature does not work at all. I receive every type of advertisement permitted. Can I change something that will allow me to 'Block' these sites?Under setting the 'Block' feature is checked.

:)

 

How to Block Websites

I have googled a bit and found software that can be used to block websites on a computer. I also found another way by using Windows which I would prefer. My problem is I must be doing something wrong. Here is the site that has the steps.
How to block websites | PCWorld

Here is what happens when I perform step 6. I am the administrator by the way.





Any ideas on how to make this work?

 

How to Block Websites

Sorry everyone but I have done everything suggested and it still does not block the website.

 

How to Block Websites

I have the document in the etc folder





It is still a text file. And it does not block the website. I cannot do what you suggested by saving to docs and changing name. But at least its in the folder. Now how to make it work.