There are three sorts of ports on a monitor: HDMI, DVI, and VGA. On the other hand, laptops do not always feature one of these ports. Indeed, some recent models may include a USB-C connector that also serves as the display port. Thunderbolt ports have been phased out of MacBooks in favor of USB-C ports. How to fix DisplayPort to HDMI adapter not working?

Users who have computers that lack one of the three ports found on a monitor must purchase adapters to connect their displays. Adapters can be inexpensive or expensive, depending on the manufacturer, but in most circumstances, knock-offs will suffice.

How to fix DisplayPort to HDMI adapter not working

DisplayPort to HDMI adapter not working

The majority of DisplayPort adapters are plug-and-play. This is true for most adapters, but if yours converts a DisplayPort into many port types, such as HDMI, VGA, DVI, and so on, you may need to turn it on if it has an On switch. If not, it will work the moment you attach it to your device (s).

How to fix DisplayPort to HDMI adapter not working

If your DisplayPort to HDMI adapter isn’t working, try the solutions listed below.

1. Disconnect and reconnect

When you attached the wires to the adapter, the HDMI signal may not have been detected. In this scenario, take the following procedures.

  1. Disconnect all cables from the adapter i.e., the adapter should not be connected to your computer or monitor.
  2. Connect the HDMI cable to the monitor and then to the adapter.
  3. Connect the adapter to your computer.
  4. If you’re on Windows 10, press Win+P.
  5. Select the Extend option.

2. Select HDMI input source

The display or screen may not detect an adaptor. In this situation, you’ll have to choose the HDMI input source manually. The monitor’s settings section is where you do this.

  1. Look for buttons on the bezel or side of the monitor and press the menu button.
  2. Select the input source menu.
  3. Select HDMI as an input source.

How to fix DisplayPort to HDMI adapter not working

3. Check adapter for compatibility

DisplayPort and HDMI are incompatible, and it’s not simply because of the shape and size of the ports. Because each connection has its own technology, the adapter you choose must be capable of converting the signal from a DisplayPort to an HDMI port.

A generic adapter may fail in this situation, so make sure yours can translate the signal.

4. Disconnect other cables

Remove any additional input wires that are attached to your monitor. It’s possible that the monitor is receiving several input signals and is unable to display anything. Remove any wires that are connected to ports that will not be used.

Ascertain that the HDMI adapter is securely attached to the HDMI port.

5. Power cycle everything

When it comes to signals, it’s not always evident what’s preventing them from working, but a power cycle can assist get the adapter back up and running.

  1. Turn your computer off.
  2. Turn your monitor off.
  3. Unplug your computer and your monitor.
  4. Wait a few minutes.
  5. Plug the monitor and system back in.
  6. Turn your system on and connect it to the monitor via the adapter.

Related: How to fix Second hard drive not detected in Windows 10


DisplayPorts are a relatively recent technology that is still largely seen on Apple systems. Problems with DisplayPort to HDMI adapters aren’t uncommon, but in most cases, a power cycle will resolve the issue.