Updates for newer Windows versions are often downloaded in the background and installed automatically on the next reboot.
There are a few keyboard shortcuts on Windows computers that nearly everyone knows: Ctrl + C to copy, Ctrl + V to paste, maybe even Ctrl + Shift + Esc to open the Task Manager, Ctrl + Alt + Delete to ...
Microsoft announces a safe way to stick with Windows 10 past its 2025 end-of-support date, but it'll cost you.