Window7 build 7601 This Window is not genuine. There is a message, how can I solve it?

When I turned on the computer, the following phrase appeared on the bottom right desktop.

Window7
build 7601
This window is not genuine.

The message appears, how can I solve it?

3366 2015-12-13 Gentleman

I looked it up and found that there were many ways, but the one below was the most obvious.
http://parangbee.blogspot.com/2014/12/window7-7601...

Gentleman 9 years ago 0

There's also a way to re-register the original product or turn off the notification
http://godofstudy.tistory.com/515

Gentleman 9 years ago 0

https://www.lifeqna.kr/question/4002
The way it came out here was a little simpler.
I've confirmed that it's working well.

Gentleman 9 years ago 0