Where is the Win7 system defragmentation? How do I turn on Disk Cleanup?

Disk defragmentation is an operation that we often use when we operate a computer. Disk defragmentation is the removal of disk-fragmented files by cleaning up the disk's junk files to free up more disk space and faster disk speed. Now most people are using the Win7 system, where is the disk Cleanup of the Win7 system? How do I clean up disk fragments? Now go with the little ones to see where the Win7 Disk Cleanup and defragmentation is.

　　The specific steps are as follows:

1. Open Explorer, right-click on the local Disk (C), and select Properties.

2, in the pop-up local disk properties to select the general, click Disk Cleanup.

3, check the files you want to clean up, click OK.

4, if you really want to delete these files, click Delete.

5, the Disk Cleanup started to run.

6, after the completion of the Disk Cleanup, we click on the local Disk properties in the Tool tab, click to defragment immediately.

7, in the Open Disk Defragmenter window, select the disk to be sorted out, you can analyze the disk, you can also directly click to defragment disk fragments.

8, look at the program automatic analysis disk, and then finishing.

9, if you want to regularly disk defragmentation can click the configuration plan, set up scheduled to run disk collation. (However, do not prohibit the system's disk fragmentation auto-defragment task when optimizing boot times) This scheduled task boot startup item OH