Picture a scenario where you are working on your Windows laptop or desktop and unknowingly, you press a combination of keys on your keyboard and suddenly your computer screen rotates to another angle it could be 90 degrees, 180 degrees, or even 270 degrees. scary right? well it may appear so however, there is a very simple and quick fix for this:

Fix: Just ensure you are logged in if you have done so already then simply hold down the ALT + CTRL keys together then tap on the up arrow key of your keyboard while still holding the ALT and CTRL keys and ....that's it you should be good to go.

source :https://techsolutionsng.com/threads/what-to-do-when-your-laptop-or-desktop-screen-display-turns-up-side-down.1/