1, you can use third-party management software to clean up some junk files on your computer and uninstall some unnecessary plug-ins. 2. You can also slim down the system disk and move some large files of disk C to other disks for storage. 3. Delete redundant applications, open the control panel, and click Uninstall Program to uninstall some uncommon software. 4. You can also save files in other places on the hard disk, then format the hard disk, or reinstall the system.