You can also use Windows’ own Display Settings page to make these changes: The example below is for our Nvidia laptop GPU for illustration purposes. Once in the utility, you’ll need to locate the display settings. What is universal between all brands is that you access these settings by right-clicking on the desktop and then selecting the Nvidia, AMD, or Intel utility from there. How you do this depends on the brand of GPU you have since the name of the GPU utility and its layout will differ. In some cases, you won’t see anything or just a “no signal” message.įor a secondary display, the easiest fix is to open your display settings and then change the resolution and refresh rate. If it fails to do this, the display should show an error message that an unsupported resolution or refresh rate was chosen. When you connect an HDMI display, your computer should automatically pick the correct resolution and refresh rate. Manually Choose a Supported Resolution and Refresh Rate If you can’t see anything on any screen, you can hold the Windows Key in and tap P repeatedly to cycle through the different modes. You can then use the mouse pointer to select your preferred mode. To quickly switch between these modes, hold the Windows Key + P. A discrete GPU will have the connector on the card itself, accessible through the tall rear slots on the back of the computer. The picture above is an example of a motherboard connection. If you have a discrete GPU installed, make sure to plug the HDMI cable into the card and not into the HDMI port on the motherboard. Many desktop computers have integrated graphics available through an HDMI port on the motherboard itself. That will help determine which component is at fault. To isolate the problem with your HDMI port not working, mix and match components in your connection with other devices to see if the issue is with the display, the computer, or the cable itself. If you see any kind of damage, replace or repair the components if possible.

Check the cable to make sure it isn’t frayed or that the connectors aren’t deformed, corroded, or partially broken from the cable. Inspect the Cable and Ports for Damageīefore trying anything else, check the HDMI port on your computer and the one on the display for damage such as corrosion or a plug that sits loosely in the port. It’s not particularly expensive to buy a DVI, VGA, or DisplayPort to HDMI adapter these days. If your display only has an HDMI input, you can use an adapter.

Display port to hdmi not working mac