The latest version of the Windows Security suite, Windows Defender, includes the AppLocker tool, which can be used to scan for and remove malicious software (malware) from your computer. While this software is not free, it is also not an expensive option. To run this application, you will need to first download it and install it onto your computer. The download comes with an installation wizard that guides you through the process of getting this software up and running. Once installed, you will be able to use the software by going to the program icon on your desktop and then selecting "Run".
Once you have run this program, you will need to open the application and then click "Scan". This software will scan your computer for any malicious software that might be on it. Once the scan is complete, it will list any of the malicious applications on your computer along with details about the program. Once the program is complete, you will be able to delete these applications by using the "Remove Program" button.