2. Start-Run-Enter MSConfig.
3. Click Start after opening, check the input method, kill the virus, and confirm after removing all protections.
4. Restart the computer.
5. Use the third-party software 360 security guards to optimize the cleaning of the computer.
6. Use the 360 security guard plug-in, move the C disk, and slim down the system disk after moving the computer.
7. You can also right-click drive C-Properties and click Disk Cleanup.