1. Open "My Computer" and enter the disk page.

2. Locate disk D, right-click the disk to find properties, and then click Enter.

3. Click the Disk Cleanup option in the disk, and then click OK.

4. Check what you want to clean up, click OK, and then wait for the cleaning to be completed.

5. Or use the third-party cleaning software, select the system disk for slimming, and select the content to be cleaned.