If your HDMI port isn’t working, you may be able to fix the issue yourself by troubleshooting some common problems. If you have tried all of these solutions and still have an issue with your monitor and its HDMI port, contact the manufacturer of your monitor or call a professional for further assistance.
Your monitor may be defective. It’s possible that your computer is sending a signal to the monitor, but the monitor cannot interpret it properly. If you have another HDMI-compatible device connected to your computer, like a laptop or smartphone, try connecting them to see if they work.
If one of these devices works on the same screen as yours (for example, an external hard drive or DVD player), then it is likely that your monitor is defective and needs replacing in order for HDMI ports to function as intended. However, if all other devices fail to show any video output on the same screen as yours (for example, both laptops and smartphones would display nothing), then we recommend moving onto our next troubleshooting step: checking whether you have plugged in all necessary cables into their appropriate ports at both ends of wires - including those for USB connections!
Check the cable for damage. If you’ve been using your HDMI cable for a while, it may be time to replace it. A damaged or fraying HDMI cable can cause problems when connecting to your monitor, so if you notice any signs of wear and tear on the cord, consider getting a new one.
Check the pins in your connector for damage or bent pins that could prevent a secure connection between them and those in your monitor's port—this is probably the most common issue when connecting an HDMI device like a laptop or gaming console to an external display.
Make sure there aren't loose connections anywhere along the length of your cable—if there are any loose wires inside, they will prevent full functionality from being achieved during setup. This is also another common problem that can often be solved simply by tightening them up with pliers or some other tool (check out our guide on how to fix broken cables).
If your display settings have changed, there are a few ways to fix this problem.
In the Control Panel, select Display Settings and make sure that the correct resolution is set for each screen. If you're using multiple displays, select the one where HDMI isn't working and check its properties to make sure it's at 60Hz. If it's not, try changing its refresh rate by right-clicking on the desktop background in Windows Explorer and selecting Screen Resolution from the drop-down menu that appears.
In Windows 10 Settings app > System > Display > Advanced display settings > Advanced sizing of text and other items (DPI), change "Smaller - 100% (default)" setting under Recommended scaling level to something else (for example Medium - 125%).
On MacOS go into System Preferences > Displays click on Scaled then choose More Scaling Options... then enable Reduce Transparency by unchecking it if it is checked or vice versa depending on what version of MacOS you have installed
If you've recently updated your computer's operating system, the display output may have changed. This is most likely due to a recent update, but could also be related to a more recent installation or uninstallation of software and/or hardware.
If you're encountering this issue on an external monitor, check the cable connection between the monitor and computer. Ensure that both ends are firmly plugged in and that there aren't any loose connections inside either device. If these solutions don’t work, try using another HDMI cable with your hardware setup.
Restart your computer and check if the problem is solved. If not, proceed to step 2.
Restart the HDMI cable. Some cables may have loose connections and need to be reconnected.
For monitors with a built-in USB hub, check if your monitor's USB port is working by plugging in another device like a flash drive or mouse into it; if it doesn't work, then you should check out [this article](https://www.laptopmag.com/articles/how-to-fix-an-unresponsive-usb-port) for more troubleshooting tips!
If you have an HDMI cable that is compatible with your monitor and computer, make sure the other end of the cable is properly connected to your computer's HDMI port. If it is not, try connecting it to another available port on the back of your computer.
If you are using a different brand of HDMI cable, make sure it's compatible with both devices. Some devices may only work with specific brands or types of cables; in these cases, it's important to follow manufacturer instructions carefully so that you use only compatible devices together.
There are many reasons that the HDMI port may not be working on your monitor, but often you can fix this problem on your own without any advanced tools or equipment. The first thing that you should do when addressing a problem with the HDMI port is to check the most basic items, such as cables and settings, before moving on to any other possibilities.
To test whether or not your cable is working correctly, disconnect it from both ends of your computer's HDMI port and then reconnect it again. If there was nothing wrong with either end of the cable before disconnecting it and then nothing still seems wrong after reconnecting it, then the cable itself could be faulty and should be replaced.
Next, check that all of your computer's display outputs are enabled by opening up "Control Panel" and clicking "Hardware & Sound." Under "Display," select "Advanced Settings" in order to access these options. Make sure that each output option has been set properly (iLT/DP1) instead of (VGA) or something else entirely different; if necessary change them accordingly so they match what type of screen device(s) you're using: DVI-I for older monitors such as Dell™ S2340M 23 Inch Monitor - Black 1920 x 1080 Full HD IPS Display LCD Screen Display Panel Assembly Replacement Assembly Part No.: A8281135 (which will come up automatically upon entering this particular code into its search bar), VGA for older flat-panel monitors such as Dell™ P17F Series 17" LCD Monitor - Black TFT Active Matrix 1280 x 1024 Max Resolution Viewable Area Panel Part No.: A9612058
If none of these solutions work, then it is time to contact the customer service department at your cable provider or computer manufacturer. They will be able to help you troubleshoot and fix any issues with HDMI ports on your monitor or TV.