5 quick solutions for no HDMI signal on ASUS monitor

Your ASUS® monitor says “No HDMI Signal,” but everything looks plugged in—now what? We’ve all been there, staring at a blank screen wondering if it’s the cable, the port, or some setting buried in the menu. The good news? It’s usually something simple. 

At Asurion, we help people figure out frustrating tech issues like this every day. Here are five quick and easy fixes to get your display back up and running.

Why does my ASUS monitor say “No HDMI signal”?

What causes an ASUS monitor to have no HDMI signal? It's usually driven by one of these problems.

• Loose or faulty HDMI cable. HDMI cables must be securely inserted into the ASUS monitor to relay a signal. If the cable is loose or damaged, the monitor won't be able to display visuals.
• Incorrect input source selected. Most ASUS monitors have multiple input sources. HDMI ports, DisplayPort, VGA, and DVI are just a few examples. If the wrong input source is selected, the ASUS monitor won't detect the HDMI signal.
• Outdated drivers. ASUS occasionally releases firmware updates for its monitors. If your monitor doesn't have the most recent update, you may encounter issues using it—like an HDMI signal error.

Troubleshooting HDMI signal issues on ASUS monitors

Try these solutions to resolve HDMI signal detection problems on your ASUS monitor.

Check cable connections

Verify the HDMI cable is connected on both ends. It should be firmly inserted into the computer (or other output source) and the ASUS monitor. Also, inspect the cable for damage. If you notice bent pins in the connector or tears in the plastic covering, it's time to replace it with a new HDMI cable.

Confirm the power cord is plugged into the monitor and a working wall outlet. If the screen is entirely black with no evidence that it's receiving power, try a different wall outlet to determine if it's an electrical issue.

Update drivers

The ASUS Download Center provides driver support for monitors. Visit it to find available drivers for your monitor.

1. Navigate to the ASUS Download Center website.
2. Enter the ASUS monitor model name or its serial number. Alternatively, you can select your product from the page's drop-down menus.
3. Click Driver & Tools underneath the model name. 
4. On the next page, click the BIOS & Firmware heading if it appears.
5. Click Download to install available firmware updates.

If there is no option for BIOS & Firmware, ASUS does not have firmware updates for your monitor. 

Test monitor on another device

Connect the ASUS monitor to another source, such as a computer or laptop. Confirm the cables are secure and that you have selected the proper input source. If the ASUS monitor works with the new device, there may be a problem with the other one. It could be a faulty HDMI connector or another hardware issue.

Power cycle the monitor

Power cycling removes all sources of electricity or energy from the monitor. It allows the system to clear out any glitchy bugs that may cause HDMI display errors. To perform a power cycle, take these steps.

1. Unplug the monitor's power cord from the electrical outlet. 
2. Disconnect the other end of the power cord from the monitor.
3. Let the monitor power down. Wait at least 30 seconds to flush out all the remaining energy in the device.
4. Reconnect the power cord to the monitor's port. Plug the other end of the cord into the electrical outlet. 

Reset monitor settings

Restoring the ASUS monitor to its factory settings brings it to its default state. It erases any settings you've customized for the device. Doing a factory reset may fix a lingering HDMI connection problem if the other solutions don't work.

1. Press the Joystick button on the back of the monitor. If there is no Joystick button on the back, press the button to the left of the Power button. The monitor's menu will appear.
2. Use the Joystick button to click the Wrench icon > All Reset. 
3. If you don't have a Joystick button, use the arrow buttons on the monitor's underside to navigate the menu. Click the Wrench icon > All Reset.

FAQ

How do I get my ASUS monitor to recognize HDMI?

Start by checking that the HDMI cable is securely connected to both the monitor and the device. Then, make sure the monitor is set to the correct input source. If that doesn't work, try restarting both the monitor and the connected device.

Can a bad HDMI cable cause no signal?

Yes. A damaged or low-quality HDMI cable can prevent a proper connection between your monitor and device. Swapping in a known working cable is a quick way to rule this out.

What input should my ASUS monitor be on?

Most ASUS monitors have multiple input options like HDMI, DisplayPort, and VGA. Press the Input or Menu button on the monitor and select HDMI as the source to make sure it matches the port you're using.

Do I need to update drivers if my ASUS monitor has no signal?

Sometimes. If you're using a PC, outdated or corrupted graphics drivers can cause display issues. Updating your GPU drivers can help your computer communicate properly with the monitor.