Use 360 to clean up junk files, or use super rabbit to clean up. Click Start-Programs-Accessories-System Tools-Disk Cleaning, which can also effectively clean up the junk files on disk C! If some files cannot be deleted, here are some ways to delete them manually. 1. Delete after logout or restart;

2, enter the safe mode or use the boot floppy disk (CD) to boot into pure DOS, and delete;

3. If you delete a folder, delete it from the inside out, that is, first enter the folder to delete all the contents, and then return to the previous directory to delete the folder;

4. Delete with a file shredder such as Windows Optimizer;

5.Win2000/XP system logs in as an administrator and then deletes it;

6. If the system is WinXP, close the system restore and delete;

7. For large files, especially compressed package files, turn off the real-time monitoring of antivirus software before deleting them;

8. Cancel the pre-reading function before deleting. Methods: Start → Run, input REGSVR32/U shmedia.dll and confirm. Delete after reboot. Then run regsvr32 shmedia.dll again to resume registration;

9. Delete with WinRAR, open WinRAR, click Add, select the file to delete, click Delete Source File after Compression under Settings, and delete the compressed file after compression.

10, scan the partition where the file is located first, select "Automatically repair files and sectors" before scanning, and delete it after completion;

1 1, open the command prompt window, then open the task manager to end the "Explorer.exe" process, enter the directory where the file is located in the command prompt window, and delete it with the Del command. Then click File → New Task → Browse → Find C:\WINDOWS\Explorer.exe in Task Manager, and click OK.

12, Win2000/XP system, clear the page file and then delete it. Methods: System Properties → Advanced → Performance Settings → Advanced → Virtual Memory Change → Set the page file size as "No Paging File" and delete it after restarting. Then restore the original page file.