2. In the opened interface, click View to uncheck the protected operating system files, then select Show all files and folders, and click OK.
3. Go back to the desktop, open "This Computer", open drive C, and see the "Users" folder.
4. Double-click to open the user folder and find your own account.
5. Open the account and you will find the AppData folder.
6. Open the AppData folder, which contains three folders: Local, LocalLow and Roaming.
7. Open three folders in turn. The Temp folder is a temporary folder, and files in it can be deleted.
8. These files are generally temporary files left by system upgrades, patches and software installation. Ctrl+A select all, delete. If it can't be deleted, you can delete it by restarting the computer.