In another post by Reddit, users confirmed that notifications would appear when they started the computer.
You can see a "Learn More" button on the right side of the notification popup. When you click this button, it will open the Microsoft web page in the browser with a detailed description of the system support end time and user-selectable options.
As Microsoft promised, the pop-up window also has a "Don't remind me again" dialog box. Users can use it to turn off this reminder.
Microsoft said that users can continue to useWindows7, but they will stop software and security updates for the operating system from 2020, which means the system will face greater risks of viruses and malware.