How To Fix DisplayPort Not Working But HDMI Is Working?

Author: Anirban Saha

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Sometimes we encounter this problem: the DisplayPort is not working with our PC, but the HDMI port is working fine.

DisplayPort issue is commonly seen and can occur very commonly through your HDMI cable works fine, and you can easily connect via the HDMI cable to establish the connection. 

DisplayPort and HDMI are two types of video output ports.

The two ports are not interchangeable, and a display doesn’t have to support both display types to work.

HDMI is more common, so if you have multiple types of displays, then you may need an adapter to use your DisplayPort. 

To use DisplayPort or HDMI, you need to ensure you have the right cables and that your computer is using the correct ports to connect your computer to your display device.

The DisplayPort issue is easy to solve and can be fixed by the steps shown in this article.

fix DisplayPort not working but HDMI is working

Let’s get started!

Why does my HDMI work but not DisplayPort? 

Various system configurations can cause an HDMI adapter to work but not a DisplayPort adapter. They include: 


Faulty connections of cables or ports. Check all connections and ensure they are screwed in as much as they can go.


It is possible that the HDMI cable or computer settings are not compatible with the monitor. Make sure that you have installed the correct drivers for your display device.


The monitor is probably not playing nice with the cables or computer settings.

Try using a different cable or setting up your computer to a different port; if possible, on your computer, then try a different one if it has another display port available.

Proper Source/Computer

If your source isn’t displaying properly, it’s time to look at the connections made within your computer or source device.

Make sure that everything looks good. If you have a problem, this can be a possible reason your display isn’t working correctly.

How to fix DisplayPort not working but HDMI is working?

To get your DisplayPort working again, you can follow these steps:

1. Disconnect and Reconnect

Disconnecting and reconnecting can be a quick basic fix.

Doing a basic disconnect and reconnecting your Displayport to HDMI can be easy, and you need to do this troubleshooting every time you face it.

2. Basic OS Troubleshooting

1. On the Computer or Laptop Power Button, there will probably be a switch that exists next to its Menu Key (question mark). Press the Menu button and then choose Settings.

2. Choose Control Panel > Hardware and Sound > Device Manager.

3. In the Device Manager window, look for a yellow exclamation mark in front of your DisplayPort adapter (your computer will probably have more than one).

Uncheck if another device is connected to your DisplayPort by checking off the other connected devices.

Change the “Power” setting to your DisplayPort adapter.

4. Turn on your HDMI display and press the Menu Key again in the lower-right corner of your screen. Choose “Power Options” from the menu that appears.

You can choose to have the Power Plan set to “Never” or “Boot to Safe Mode,” or you can click on the box for Advanced Options and then choose “Normal mode.”

If you do not see this option, scroll through the other options and find it.

5. Restart your computer. Choose Restart from the computer’s menu.

6. Your computer will now start up in a “Normal” mode. Your operating system will be functioning as normal, and you should be able to access your DisplayPort.

7. Again, turn on your HDMI source. If your source has previously been active and the display is usually working, it would mean that your DisplayPort has become idle and will require some time for a connection to be established.

8. Re-test your DisplayPort.

9. If you still have a problem, you may want to troubleshoot your DisplayPort.

Finally, to test the HDMI-DP port, connect the HDMI cable from your display to the HDMI port on your computer and then turn on your monitor. 

3. Power Cycle Method

The power cycle method is one of the common solutions to these issues. Generally, with a proper power cycle of 15 minutes on and off and disconnecting entirely from the power source.

Most of the time, this method would fix this cable.

4. Check and Fix Input Source

When you have a display and computer supporting the different types of ports, one with a DisplayPort and another with HDMI, you might have selected the wrong Input source in the display source. 

You need to select the proper display source in the display.

f your display has multiple HDMI ports, you need to choose the right one.

Otherwise, though your cable adapter works fine, it will still not work due to an improper input source.

How do I know if my DisplayPort is Active or Passive?

You can know if your DisplayPort is active or passive by checking the cable or looking at your source.

If there is a bit of red and green light, your DisplayPort is active and will work with an adapter.

If there are only two lights, red and green, the DisplayPort is passive and does not work with an adapter.

Also, An active display port contains a chip inside it, and a passive display port does not have a chip inside it.

If you have an active display port, your monitor will work with a display port to an HDMI adapter.

If you have a passive display port, your monitor will not work with a display port to an HDMI adapter.


Let’s conclude the post on fixing DisplayPort not working but HDMI working!

It can be frustrating when a new setup doesn’t work as expected. Finally, if you have gone through the steps outlined above and your DisplayPort is still not working, it could be that the source of the issue is coming from the source of the display. 

DisplayPort and HDMI are two different types of ports used to connect a computer to an external display.

DisplayPort looks similar to HDMI, but they are not compatible, and DisplayPort is a newer standard oriented towards higher resolutions and refresh rates.

Even if your DisplayPort issue is not fixed yet, it is time to get a new DisplayPort cable if your cable has problems or you need a new Displayport to HDMI adapter.

I hope you enjoyed reading the post. Thanks for reading.

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