How to Disable a Laptop Monitor to Use a Regular Monitor. Windows enables you to use multiple displays or switch between available monitors. This is useful in situations when your laptop's display ...

To turn off the screen while keeping the PC running, use keyboard shortcut, adjust the power settings, change closing the lid settings or use free tools.

You can turn off the computer monitor using a desktop shortcut on Windows using PowerShell. Set keyboard shortcut to turn off the display.

If you want to keep your laptop closed and use only the monitor, you can turn your laptop into a compact desktop setup with a few quick settings tweaks.

Does your desktop computer need some extra screen space? We can show you how to use your laptop as a monitor if you need a second display: Here's what to do.

Q: My old laptop's screen backlight has blown out ... try hitting the Command and F1 keys to switch OS X back to mirroring the built-in screen. You could also use a standard computer monitor for this ...