How to create an alert when the computer is turned on?

Question

System administration

Hello. Tell me how to create an alert with text and a button that will open a web page when windows is turned on? One thing, the alert should run once.
Alert is something like this:
Title, text, button (clicking on it opens a web page)

Answer 1

Use Task Scheduler? Or let's say after the program is executed, unsubscribe from autoload.