HDMI and DisplayPort are two different kinds of video output ports. They are not interchangeable. A display can support only one type and not necessarily both to work.
Even though HDMI is more common, DisplayPort is equally as necessary, and it’s a newer standard designed to provide higher resolutions and refresh rates.
This problem: the DisplayPort is not working, occurs frequently but can be solved with easy DIY fixes. If you’re in this situation, you’ve come to the right place.
This article will provide sufficient DIY fixes to solve this DisplayPort not working problem so you can enjoy its function. However, before then, let’s establish the causes of this problem.
DisplayPort Not Working But HDMI Is: Possible Causes
Your system DisplayPort is not working because of different system configurations that hinder it. To be more specific, the following reasons are likely causes of your DisplayPort not working:
- Faulty connections of ports or cables
- Device incompatibility
- Outdated drivers
- Incorrect input source
- Incorrect refresh rate
- Communication error within computer or source device
DisplayPort Not Working But HDMI Is: DIY Fixes
As discussed above, if your DisplayPort is not working, but the HDMI is, you can fix this problem with suitable troubleshooting methods. Follow the techniques discussed below to fix the problem quickly.
1. Do A Power Cycle
The power cycle method is a common fix to this DisplayPort not working problem. Disconnecting and reconnecting the device can quickly fix the problem.
Generally, performing a power cycle of about 10 minutes can get your DisplayPort to work fine again. Disconnect your device entirely from the power source, leave it idle for about 10 minutes and reconnect it.
2. Check All Connections
When there is a wrong connection or faulty components, the DisplayPort might not work. Check all links of cables or ports and ensure they are tightened appropriately.
Also, inspect the wires for any visible damage or fault. If there’s any, you should replace it. You can also change the cables entirely to clear all doubts or try a different DisplayPort if your computer has multiple ports.
3. Adjust Refresh Rate
If your monitor has an incorrect refresh rate, it may prevent detecting DisplayPort ports. This problem is a software-related issue. You can fix it by modifying the refresh rate through the GPU’s setting.
4. Check and Fix Input Source
If your computer supports different types of ports, both DisplayPort and HDMI, you may have selected the wrong input source in the display source. Inspect the display source in the display and ensure you have set the correct input source. Otherwise, your cable adapter will work fine, and the DisplayPort will not work because of an incorrect input source.
5. Update System Firmware or Drivers
Outdated or corrupted firmware and drivers can lead to a communication error, preventing DisplayPort from working. Check your system properties and ensure you have installed the latest firmware or drivers.
You can visit your manufacturer’s website to download and install this software. However, if you recently upgraded the drivers or firmware, and you notice the DisplayPort that works before suddenly stops working, you might consider rolling back to the previous version.
6. Try Basic Operating System Troubleshooting
- Click on the Start Menu
- Go to Settings and click on Control Panel
- Select Hardware and Sound option
- Select Device Manager. From the Device Manager option, check for any yellow mark in front of the DisplayPort adapter.
- Unmark any other device connected to your DisplayPort.
- Adjust the Power Setting to the DisplayPort adapter
- Switch on the HDMI display and select the Menu key again
- Select Power Options from the menu that displays
- Modify the power plan to Boot to Safe mode or Never as you please
- You can also select Advanced Options and enable Normal Mode.
- After this process, then restart your PC
- Your computer will start up in a “Normal” mode, and the OS will function normally. Thus, you should be able to access the DisplayPort
- Switch on the HDMI source again. If it was active previously and the display was working, the DisplayPort has become idle. It will need some time to establish a connection.
- Test your DisplayPort again and see if it’s working.
In most cases, this method will fix the DisplayPort not working problem. If the problem persists, then you’ll need more troubleshooting methods, as it could be that the problem is coming from the display source.
It can be frustrating when a new setup doesn’t usually work. As discussed in the article, you might consider getting a new DisplayPort cable.
If the problem remains, don’t hesitate to contact your manufacturer support for further diagnosis
How Can I Check If DisplayPort Is Working?
You can know if your DisplayPort is working by checking the input menu on your computer. If it’s working, it will be among the input menu, and you’ll be able to select it as the preferred connection type. Furthermore, your monitor screen will show some graphics to indicate that it has received a signal from the DisplayPort.
Why Is My DisplayPort Adapter Not working
Your DisplayPort adapter is not working because there’s an improper connection of the cables between the display and the computer. Ensure you check the cable connection from the DisplayPort to the display and be sure it’s well connected and tightened.
How Do I Get My HDMI DisplayPort To work?
If you have a DisplayPort to HDMI adapter that’s malfunctioning, you can try the tips below to fix it:
- Power cycle the devices
- Disconnect and reconnect again because the HDMI signal might not have been detected during the time you connected the cables and the adapter
- Check the adapter for compatibility
- Disconnect other cables and accessories
- Select the appropriate HDMI input source
Why Is My DisplayPort Saying No signal?
Your DisplayPort may be indicating no signal when there’s an improper connection. It can arise when the cable is bad, or you select the wrong input source. You should double-check and ensure the connector is working fine and well plugged. Also, ensure it’s tightened appropriately to avoid a loose connection. To clear the no signal error, you can also unplug and replug the DisplayPort connection.