Why Does My ViewSonic Monitor Show No Signal?

When the monitor is turned on and it's not receiving signals from the other device like a laptop or CPU, the monitor usually shows no signal message on display.

How to Fix ViewSonic Monitor No Signal Issue?

The No Signal issue on monitors usually indicates that your monitor is not receiving signals on the selected input option like HDMI, VGA or DVI.

Without wasting our time, let's discuss all the fixes below.

1. Check Monitor Input

First of all, check the monitor input, that your monitor is set on the right input or source mode. If you are using the HDMI cable make sure that your viewsonic monitor is HDMI input option is active on the monitor.

Lets also explain the steps that how to change Viewsonic monitor Input:

  • Press the “Source” or “Input” button.
  • Scroll down to Input Menu through arrow keys.
  • Select the Input option and schose your connectivity option (HDMI, DVI, VGA or C-Port).

2. Un-Plug & Re-Plug Your Connectivity Cables

If your monitor is set on the correct input option, you need to unplug your connectivity cables for your monitor and other devices. Just clean both ends of your connectivity and re-plug them again in your monitor and another device.

3. Check Your Connectivity Cables

Unplug your connectivity cable from the monitor and other device, chek the cable in detail and try to get a damage spot in the cable.

If you got any damage spot in the cable, here you will need to replace your connectivity cable.

If you don’t get any damage spot in the cable, you will need to move for the other fixes to fix your monitor issue.

4. Check Connectivity Cable on Other Device

If your connectivity cable is physically fine and you are still facing the issue, here, in this case, you need to check your existing cable on the other device in your home or you can also check it on your friend or neighbor's device.

5. Check Your Devices Slots or Ports

After this step, you need to make sure that both your device's connectivity input ports or slots are in a workable position or not. Here you will need to check both the slots, if they are not broken and rust-free then you can move to the next step.

If they are broken or rusty, then you will need to fix them and then you will check your ViewSonic connectivity with the other device.

6. Try Different Connectivity Option

If all the above steps and fixes didn’t solve your issue, you need to try a different connectivity option.

If you are using an HDMI cable for your connectivity with the other device, we recommend you try a different cable (DVI, VGA or C-Port).

After changing the cable, also keep in mind that you will need to change the monitor Source or Onput option.

7. Contact Viewsonic Technical Support or Customer Care

If we didn’t solve your issue with our recommended fixes, we will recommend you contact the viewsonic technical team or customer care.

You can also get a technical person near you to fix your issue.


We tried our best to collect information for the fixes of the viewsonic monitor no signal issue. I hople our detailed guide will help you and it will solve your issue.

We noticed in our research that it occurs due to the wrong input or source mode in most cases.