C disk is full, which can be cleaned by the disk cleaning function that comes with windows. The specific method is as follows:

1. Press the shortcut key win+R in Windows system to start running and enter "cleanmgr.exe".

2. Then you can turn on the disk cleaning function and select the C disk in the drive.

3. Wait for the system to defragment the disk.

4. Then, in Disk Cleanup, select the option to clean up, and click Clean up system files below.