“No Signal” does not come from your computer. This is your display device indicating that it has nothing to display. https://askleo.com/4824 #askleo #monitor Related Posts What Does “No Signal” Mean? - "No Signal" is a message coming not from your computer, but from your display device, indicating that it has nothing to display. I'll review possible causes. How Do I Shut Down a Machine with No Display? - It's not difficult to shut down a machine if you can't see its screen -- as long as you plan ahead. Why Does My Monitor Stretch and Distort My Display? - To get the clearest image possible it's important to have a graphics card that can produce the native or prefered resolution of your monitor. Will My Old CRT Work with a New Computer? - Of course it depends, but you may be able to get that old monitor working with a new computer.