2. Don't have too many junk files, clean them up. Tencent computer housekeeper cleans up the garbage and sweeps it (regularly).

There are many temporary files on the Internet and other systems, which should be cleaned up.

4. The available space in the system area is too small to expand the remaining space.

5. There are too many partition fragments in the system, so partition fragments should be sorted regularly. Defragmentation software comes with the operating system.