If you reinstall the system, do you want to use the official Microsoft channel or the official Microsoft reinstallation, but the original system (probably Windows 7) is not activated, so the display is not activated after reinstallation. An inactive system is equivalent to pirated Windows, so you can't use Microsoft's genuine applications. There are two activation methods.

Purchase product key

Go to Microsoft to buy a product key or buy a Windows key with mobile online shopping software.

Settings to open the window after purchase.

Turn on Update and Security.

Open "activation"

Click Change Product Key.

Enter the product key you purchased here, click Next, and then click Activate.

2. If you have no money to buy the product key.

You can use the activation tool on the network.

However, most of the activation tools on the network are activated in batches. How to activate them permanently?

I have two permanent activation tools here, one can activate all versions of Windows 10, but the link to this tool has expired and can't be found online.

There is also one that can only activate Windows 10 Professional Edition, Windows 10 Home Edition and Windows 10 Education Edition.

Download method:

Search for "Yunmeng Windows 10 Activation Tool"

Click download

Click "Activate" after opening, and wait for a moment to activate successfully.

The screenshot is very hard, hope to adopt it, thank you.