How to open the win10 start menu

Here we can set it in the control panel, mostly because the purchase key step is not set.
1, right click start button, open the control panel

2, select "System & Security"

3, click “Add features toWindows 10 Technical ... (Get new version Windows more features)

4, a page will appear, "How do you want to start..", there are two options, select “ I have purchased the product key & rdquo;

5, input key: NKJFK GPHP7 G8C3J P6JXR HQRJR (this pro test is feasible, if not, please search for other keys online)

6, click Next, the system will download the update, after the update is completed Restart, update will be installed during the restart process, wait for the update to complete, and you're done

win10 does not have a start menu solution:
1, right click on the taskbar and click Properties

2 Click on the Start menu and then use the "Use Start Menu instead of Start Screen" checkbox and click OK.

3. At the change start screen device, log out and change the settings. Remember to save the information in the computer! The logout action will be executed immediately.

4, logout and enter the system, you can see the start menu back