1. Double-click to open My Computer and find the system disk with drive letter C
2. Right-click the C drive and click "Properties" menu
3. Then find "Disk Cleanup" and click
4. Find "Cleanup" System Files" and click
5. A small prompt box will appear in the system, which will display the progress. You need to wait for the progress bar to complete
6. Then find "Windows Update Cleanup" and select it, then click the "OK" button. A prompt will appear and select "Delete Files"
7. A progress bar will appear again in the system. At this time, the system has started to clean up useless files. Just wait for the progress bar to complete
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