Viewsonic Monitor No Signal (Fix)

Turning on your ViewSonic monitor and seeing the “No Signal” message can be frustrating.

A monitor getting no signal is a common issue that can often be fixed with some simple troubleshooting steps.

In this article, we’ll walk through several things you can try to get your ViewSonic brand monitor working again.

Viewsonic Monitor No Signal (Fix)

What Causes a ViewSonic Monitor to Show No Signal?

There are a few potential causes of a ViewSonic monitor showing no signal:

1. Loose or disconnected video cable

No signal can be transmitted if the video cable connecting your monitor to your computer is loose or detached.

2. Incorrect input source selected

Most ViewSonic monitors have multiple input sources like HDMI, DisplayPort, DVI, etc.

The monitor won’t detect a signal if the wrong source is selected in the monitor’s settings.

3. Faulty video cable

Video cables can get worn out or damaged over time. A faulty HDMI or DisplayPort line could cause connectivity issues.

4. Issues with a graphics card

Problems with your graphics card’s drivers or settings can prevent it from adequately transmitting a signal to the monitor.

5. Power issues

If the monitor is not receiving consistent, steady power from the wall outlet, it may fail to detect a video signal.

Viewsonic Monitor No Signal (Fix)

1. Check Video Cable Connections

The first thing to check is that the video cable from your computer to the monitor is appropriately plugged in at both ends.

Ensure the cable is entirely inserted into the ports, and the connectors are locked in.

Secure wires by tightening the screws on the connectors.

If your monitor uses a standard HDMI or DisplayPort cable, try switching to a different cable in case the current one is faulty.

Test the monitor with multiple cables if possible.

2. Select the Correct Input Source

Most ViewSonic monitors allow you to toggle between inputs like HDMI 1, HDMI 2, DisplayPort, DVI, etc.

Use the monitor’s controls to select the input source that your video cable is connected to.

This input source must match the port on your graphics card that the display cable is plugged into.

Consult your monitor’s user manual to find the input selection controls.

This is typically in the on-screen display (OSD) menu, accessible via the monitor’s buttons.

3. Update Graphics Drivers

Outdated, corrupt, or missing graphics drivers can cause connectivity issues resulting in a monitor showing no signal.

Update your computer’s graphics card drivers to the latest stable version offered by the manufacturer (AMD, Nvidia, etc).

Driver updates often resolve bugs and improve the card’s ability to output a video signal.

Use the following steps to update graphics drivers:

  1. Identify your graphics card manufacturer and model.
  2. Search for your graphics card model drivers at the manufacturer’s website.
  3. Download the latest driver update and install it.
  4. Restart your computer when prompted.

Updating drivers can resolve software-related signal issues.

4. Test with Another Device

Determine whether the “no signal” problem lies with the monitor or your computer’s video output.

Connect another device like a games console, streaming stick, or laptop to your ViewSonic monitor using the same video cable.

If the monitor displays correctly from another video source, the problem likely lies with your computer’s graphics card, ports, or cables.

However, if the monitor still shows no signal from multiple devices, then the monitor itself may be the root cause, and it’s time to buy a new monitor.

5. Power Cycle the Monitor and Check the Connections

Power cycling allows you to force a hard reset on the monitor’s electronics which may clear up temporary glitches causing no signal issues.

To power cycle:

  1. Turn off both the monitor and computer.
  2. Unplug the monitor’s power cord from the wall outlet.
  3. Wait 30 seconds.
  4. Plug the power cord back in and turn the monitor on.
  5. Boot up the computer.

This simple process forces the monitor to reinitialize, possibly restoring the video signal fully.

Remember to re-check the video cable connections while the devices are powered down.

6. Test with Different Video Cables

Faulty video cables are a common culprit of monitors showing no signal.

The cable may appear plugged in fine but could have broken wires or shorts inside.

Connect your ViewSonic monitor to the computer using video cables like HDMI, DisplayPort, DVI, or VGA.

Cables can go bad over time from normal wear and tear.

If the monitor displays appropriately with a different cable, the original cable must be replaced.

7. Reset Monitor to Factory Settings

Resetting your ViewSonic monitor clears any corrupted settings or unstable customizations that could be causing no signal issues.

To reset:

  1. Access the monitor’s OSD menu using the buttons on the monitor.
  2. Navigate to the Reset option, which may be under a Setup or Management menu.
  3. Select Factory Reset to restore default configurations.
  4. Confirm the reset when prompted.
  5. Cycle power on the monitor after resetting.

Try reconnecting the PC after resetting to see if the signal is restored.

When to Contact ViewSonic Support

If you still see no signal on your ViewSonic monitor after trying all the troubleshooting tips, it’s time to seek assistance from ViewSonic’s customer support team.

Contact technical support by submitting a ticket on ViewSonic’s website with details on the monitor model, connected devices, troubleshooting steps attempted, and the “no signal” behaviour.

ViewSonic can help diagnose whether the issue lies with the monitor hardware or incorrect settings.

They may be able to provide a firmware update or guide you through advanced menus to restore video signals.

ViewSonic support can initiate a warranty repair or replacement process in some cases of hardware failure if the monitor is still under warranty.


A blank ViewSonic monitor with no video signal can be frustrating but is often repairable through simple troubleshooting techniques.

Check connections, cables, inputs, drivers, power, and monitor settings to isolate and resolve the no signal cause.

Contact ViewSonic support if problems persist after trying these DIY tips, as further software fixes or hardware repair may be necessary.

With patience and care, your ViewSonic monitor can once again display bright, vivid visuals.

Share your love
Manvendra Singh
Manvendra Singh

Hi, I am John Williams. Editor-in-chief of the website Here I write about PC technology & Guides.