Temporary files are created by the system computer, program work is also deleted some temporary files. Programs have deleted some files and they give us valuable space on disk. How can I delete temporary files and junk files from the system, first we reboot our system, some programmed to clean some files from the system. After this, we can use window cleaner. Also, we can use a search bar that can use disk cleanup. You want to clean any file you can choose this. Select your file and click the delete button. Select ok and disk cleaner. In your system, there are a lot of third-party program files.