How to reset system win10?

After we upgraded win10 through different channels, there are still some old system residues inside the system. The space of the computer C disk is obviously smaller. These residues not only take up space but also affect the running speed of the computer. In addition to the new reloading of the system, we also You can organize our system by system reset, then how to reset the win10 system?
1. Open the “Notice” button at the bottom of the screen or go to the setup page of the computer through the start screen.

2. In the settings page, find the “Update & Security” button and click to enter the Update & Security page.

3. Click the "Restore" button, then find the reset computer and click the "Start” button.

4. Jump out of two options, the first one is “ keep my file & rdquo;, the second is “ delete all content & rdquo;. If you want to reset the system to be more pure, you can choose "delete all content".

5, then wait a moment, will jump out of the following page, prompting your computer to have multiple drives, and then ask you "do you want to delete all the files in the drive?" & rdquo; suggest you choose “ Only windows drivers are installed, so only the system disk is processed, otherwise all disks will be formatted so that you will lose all files.

6, then jump out of the page “ Also clean these drives? & rdquo; suggest that you choose the second "delete files and clean the drive", which is more secure, but it takes more time.

Note: There is a risk of failure in system reset, and backup should be done in advance before resetting.