1. Because many softwares and games are installed on drive C by default, you can find the right click of the installed software "Open File Location" on the desktop.

2. See if it is installed in the C drive. If so, try uninstalling it and reinstalling it on another disk.

3. If your disk C is set too small, but other disks are still available, we can expand the storage space of disk C by expanding disk C. Move the mouse to the Microsoft logo in the lower left corner and click the right mouse button.

4. Then, we left-click the "Disk Management" option in the menu.

5. Then we select the spare disk, and right-click the "Compress Volume" option.

6. Enter the capacity of drive C to be expanded, and then click Compress.