Junk files are temporary files that are created when you browse the internet, install programs, and use your computer. They are typically stored in your computer's "Temp" folder. Junk files can take up a lot of space on your hard drive, and can slow down your computer. To remove junk files:
1. Open the Start menu and type "Disk Cleanup" into the search box.
2. Select the drive you want to clean up and click "OK".
3. Disk Cleanup will scan your drive and calculate how much space you can free up.
4. Select the types of files you want to delete and click "OK".
5. Click "Delete Files" to confirm.