My Acer x263w displays "No Signal" right in the middle of the screen, unmoving too, when my Win 7 x64 PC is asleep. It is connected to an ATI 5450 chipset video card via HDMI.

To run the built-in diagnostics on a Dell monitor, Clean the screen and make sure there is no dust on the screen; Turn on the monitor, but unplug the video cables.

Let’s talk about these solutions in detail. 1] Wrong HDMI input selected. If you are connecting your TV to your computer via an HDMI cable and the TV screen goes black, there is a possibility ...

Common input source names include “HDMI”, “VGA”, and “DisplayPort”. ... Another factor that can cause no signal issues on your computer is your graphics card.

It's frustrating to plug an HDMI cable into your TV and get no picture. Luckily, most fixes are simple and inexpensive.

Using an HDMI splitter is fairly straightforward. You first need to connect your source device, be it your laptop, gaming console, or a streaming box, to the input port of the HDMI splitter.