After the newly bought computer defragmented the C disk, the memory became smaller. How to effectively increase the memory capacity of C disk? ask for advice

Clean drive C as follows:

1, right-click drive C- Properties-Disk Cleanup

2. It is suggested to download Rubik's Cube, clean up junk files, clean up the registry and slim down the system disk.

3. Modify the default download path of 360, Thunder and other download software and the buffer path of online video.

4. Check whether the system is automatically backed up, whether the system restore is turned on, and whether it is on disk C..

5. Delete my documents, sample music, sample pictures and other useless files under the administrator account.

6, antivirus

7. Clean up the plug-in with 360 security guards.

8. Change the virtual memory to another disk.