But if you are using a Windows laptop, then it is not possible for you to turn off the laptop screen manually – unless of course, its manufacturer has given you an keyboard shortcut.

If you want to turn off the laptop screen when using an external monitor, you can follow this guide. It is possible to switch off the laptop screen and keep using the external monitor, no matter ...

Before doing anything, turn your laptop off. Also, make sure to unplug it if ... to see the millions of specks of dust on your (filthy) screen. Add some distilled water to the mix.