Run the free ” malwarebytes”. Easy to download and run.
Or for a very extensive cleaning with step by step instructions and screenshots…. Google this exact phrase: “How to easily clean an infected computer (Malware Removal Guide)” and go to the first Google result.
Or join the forums at “bleepingcomputer” where an expert can patiently guide you through the entire process.
The first option will probably be just as good as most “services”
The second and third options will probably be much better