Chromebook Reset:

  1. Turn off your Chromebook
  2. Press and hold Refresh + tap Power
  3. When your Chromebook starts up, release Refresh


Chromebook Rotate Screen:

  1. Press and hold Control + Shift and tap Refresh


Chromebook Force Shutdown:

  1.  Hold down Power until the screen turns off or the power LED on the side goes out


Chromebook Enter Recovery Mode:

  1. Press and hold ESC and Refresh + tap Power
  2. When your Chromebook starts up, release ESC and Refresh 


Factory Reset a Chromebook:

  1. Sign out of your Chromebook
  2. Press and hold Ctrl + Alt + Shift + r
  3. Select Restart
  4. In the box that appears, select Powerwash and then Continue


Intel Mac Recovery:

  1. Command (⌘)-R: Start up from the built-in macOS Recovery system
  2. Option-Command (⌘)-R or Shift-Option-Command (⌘)-R to start up from macOS Recovery over the internet


Apple Silicon Mac Recovery:

Turn on your Mac with Apple silicon and continue to press and hold the power button until you see the startup options window. From there you can start up from a different disk, start up in safe mode, use macOS Recovery, and more.