Windows key + A: Open the Action Center.
Windows key + S: Open Cortana in text mode, so you can type in the search bar. (Windows key + Q does the same thing.)
Windows key + C: Open Microsoft Copilot
Windows key + E: Open File Explorer.
Windows key + F: Open the Windows 10 Feedback Hub.
Windows key + Ctrl + F: Search for PCs on a network.
Windows key + G: Open the Game bar.
Windows key + H: Open the Share sidebar.
Windows key + I: Open the Settings menu.
Windows key + K: Open the Connect sidebar (for connecting to new Bluetooth devices or Miracast).
Windows key + L: Lock your computer.
Windows key + O: Lock screen orientation.
Windows key + P: Open presentation or projection sidebar.
Windows key + R: Open the Run window.
Windows key + U: Open Ease of Access center.
Windows key + W: Open the Windows Ink Workspace for scribbling on tablets or touchscreen laptops.
Windows key + (+) or (-): Zoom in and out with magnifier.
Windows key + Esc: Exit magnifier.