You can scan your entire computer to be completely sure that it has no harmful files or unwanted applications.
The full computer scan scans all internal and external hard drives for viruses, spyware, and potentially unwanted applications. It also checks for items that are possibly hidden by a rootkit. The full computer scan can take a long time to complete. You can also scan only the parts of your system that contain installed applications to find and remove unwanted applications and harmful items on your computer more efficiently.
Scanning files and folders
If you are suspicious of a certain files on your computer, you can scan only those files or folders. These scans will finish a lot quicker than a scan of your whole computer. For example, when you connect an external hard drive or USB flash drive to your computer, you can scan it to make sure that they do not contain any harmful files.