1. Left-click the Windows icon in the lower-left corner of the desktop.
2. Click [Settings] in the menu ].
3. Click Update and security ].
4. Click restore ].
5. Click & ldquo; back to Windows8.1 & rdquo; and click [start] below ]. (Note: After Windows 10 is upgraded, this option can only be used within one month. If it is more than one month, it cannot be rolled back to Windows 8.1)
6. Select the reason for rollback based on your situation (you can select multiple ones) and click next ].
7. Read the precautions carefully and connect to the power adapter throughout the process. To avoid affecting your files, back up important files. After learning about and taking measures, click [next ].
8. If you have set a password for Windows, the password will be restored after you roll back. Therefore, you need to know the password. After confirming that the prompt does not affect your use, click [next ].
9. After you click [back to Windows8.1], the system restarts automatically and starts the rollback process. This process takes some time. After the rollback, the Windows 8.1 system remains active.