why is my hdmi adapter not working

December 30, 2023 - Your USB to HDMI adapter may also stop working if its corresponding driver hasn’t been installed properly. In this scenario, you should try to download and install the latest driver at once. You can manually download the driver from the website of your adapter’s vendor (the site is often mentioned in the user manual).

HP Support

h30434.www3.hp.com › t5 › Desktop-Video-Display-and-Touch › USB-C-to-HDMI-Isn-t-Working › td-p › 8933207

Solved: USB C to HDMI Isn't Working - HP Support Community - 8933207

December 7, 2023 - I have an HP Pavilion Gaming - TG01-0018 pc and have tried connecting both my drawing tablet and desktop to it because manually switching them out was getting annoying, so I bought a USB C to HDMI adapter. But whenever I try connecting either of the devices to it ... I assume the drawing tablet has an LCD screen and take the place of the monitor. There is probably no log since you are not gaming.

Discussions

HDMI STOPPED WORKING POST IOS 16.2 UPDATE - Apple Community

Hello, I have been exploring fixes for this problem since latest update as well. These are the steps I have taken to unsuccessfully resolve issues. Note I am using an Apple HDMI adapter in working order prior to update. ... It became clear after all my efforts that it most likely is a problem ... More on discussions.apple.com

discussions.apple.com

USB-C to HDMI suddenly stopped working

This is the first post I've found with this problem! I have the same set-up; a Dell laptop with HDMI port and two USB-C ports. HDMI port connects to an external monitor, one USB-C connects to a power supply, the other to an external monitor with a USB-C to HDMI cable. The USB-C ports are interchangeable as to function. This works fine most of the time, but sometimes when I boot it, the USB-C-connected monitor doesn't get a signal. "Display Settings" shows all 3 displays, but the misbehaving one is shown smaller, and listed as "Disconnect this display". Changing the dropdown box doesn't work. It won't change from "Disconnect this display". This only seems to happen at boot time. I've switched monitors, switched USB-C ports, even bought a USB-C to DisplayPort cable, but the issue pops up randomly anyway, so I'm pretty sure it is not a hardware problem. Most days it works fine, but some days it just doesn't. This is a work-issued laptop, on which I do NOT have administrator privileges, so updating drivers or mucking with the BIOS is out of the question. Since it isn't reliably reproducible, and I work from home, getting the company's IT department involved would be an exercise in futility. The only ways I've found to fix it are to reboot, or to superstitiously flip the USB-C connector over a time or two. I am a software engineer and electronics technician, so I have some small expertise. I believe the display driver is to blame, but I can't prove anything. I think there's some boot-time sequence that doesn't always go just right. FWIW, my display adapter shows as Intel(R) Iris(R) Xe Graphics, Driver Version 31.0.101.3959. It's very frustrating and annoying when it happens, but I don't have any better solution than this. More on reddit.com

r/UsbCHardware

64

46

September 26, 2023

Apple Lightning to Digital AV Adapter won't work on iPhone ...

Now make sure “Accessories” is turned on and plug the AV adaptor in. The upgrade should process for the device and the phone should recognize the adaptor. Good luck! Figuring this out and getting it to work on my iPhone 13 when Apple support kept telling me it was my TV was quite annoying! ... Digital AV Lightning Adapter not working post-IOS 17 Using iPhone 14 Pro Max. Using an apple model A1438 lightning digital AV adapter to connect HDMI ... More on discussions.apple.com

discussions.apple.com

USB-c to hdmi adapter doesn’t work

It should if you have USB-C, but even then these adapters are not that reliable - nowhere near as good as using an HDMI or Display Port cable. Did you try the troubleshooting steps I gave you? This will let you know if it can be made to work and remain stable. This is an interactive process. More on answers.microsoft.com

answers.microsoft.com

6

157

December 10, 2022

Videos

01:41

YouTube

How To FIX USB to HDMI adapter not working on Windows 11 - YouTube

December 27, 2024

reddit.com

r/Lenovo on Reddit: Yoga laptop not working with hdmi to usb-c adapter

March 8, 2025

12:37

YouTube

Turns Out, VGA to HDMI Isn’t That Simple for Home Servers… ...

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How To FIX USB To HDMI Adapter Not Working On Windows 10/11 - Quick ...

April 6, 2025

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Quora

quora.com › What-are-some-reasons-why-an-HDMI-cable-might-not-work-with-some-TVs-and-devices

What are some reasons why an HDMI cable might not work with some TVs and devices? - Quora

Answer (1 of 3): The HDMI receiving device (usually the display) contains a cable equalizer that compensates for the loss and distortion of the signal as it passes through the cable. Longer cables have more loss. The HDMI standard has no requirements for how well this equalizer must work. Some wo...

Apple Community

discussions.apple.com › thread › 254542303

HDMI STOPPED WORKING POST IOS 16.2 UPDATE - Apple Community

My issue started at IOS16 with all phones and iPads that we updated. Quite simply, streamed video is choppy when using the lightening to HDMI adaptor. The issue is not present with our older devices using pre 16 versions of IOS, streaming the same content from the same app, with the same adapter cable.

YouTube

youtube.com › programmingknowledge2

How To FIX USB to HDMI adapter not working on Windows 10/11 - YouTube

01:11

**Title: How to FIX USB to HDMI Adapter Not Working on Windows 10/11 | Troubleshooting Guide****Description: Having trouble with your USB to HDMI adapter not...

Published November 6, 2023

Views 31K

Quora

quora.com › Why-doesnt-my-USB-to-HDMI-cable-work-Does-it-need-a-driver

Why doesn't my USB to HDMI cable work? Does it need a driver? - Quora

Answer: Depends on the adapter. Most USB to HDMI (and all of them with type A connectors) are really USB connected video cards with an HDMI connector. They will need a display driver.

YouTube

youtube.com › watch

USB C to HDMI Adapter Cable Not Working ? Check This Out ...

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

reddit.com › r/usbchardware › usb-c to hdmi suddenly stopped working

r/UsbCHardware on Reddit: USB-C to HDMI suddenly stopped working

September 26, 2023 -

I have been using an HDMI cable + HDMI to USB-C adapter to connect two monitors to my laptop. My main monitor is directly plugged in to the HDMI-socket, and the USB-C adapter to the only USB-C socket on the laptop. It's been working flawlessly until yesterday. Now the second monitor just displays "No HDMI signal" and goes to sleep mode. It does not even recognize me plugging in the USB-C cable. Take note that I've done zero (0, nil, no) changes to my setup.

Naturally I thought that the adapter was faulty since I did some testing with the USB-C socket (it charged my iPhone), and the HDMI-cable was working. Purchased a new HDMI to USB-C cable but to no avail.

On my laptop the device manager shows my monitor as a "BillBoard Service".

Has anyone run into this problem? Google is not my friend in this matter, even though I am a man of lurking the internet. Can someone point me in the right direction here?

Many thanks.

Edit: Okay so it got solved by turing the laptop off, then holding the on button for 30 seconds and letting go. What this triggered I have no idea but it might help someone out.

Top answer

1 of 5

1

This is the first post I've found with this problem! I have the same set-up; a Dell laptop with HDMI port and two USB-C ports. HDMI port connects to an external monitor, one USB-C connects to a power supply, the other to an external monitor with a USB-C to HDMI cable. The USB-C ports are interchangeable as to function. This works fine most of the time, but sometimes when I boot it, the USB-C-connected monitor doesn't get a signal. "Display Settings" shows all 3 displays, but the misbehaving one is shown smaller, and listed as "Disconnect this display". Changing the dropdown box doesn't work. It won't change from "Disconnect this display". This only seems to happen at boot time. I've switched monitors, switched USB-C ports, even bought a USB-C to DisplayPort cable, but the issue pops up randomly anyway, so I'm pretty sure it is not a hardware problem. Most days it works fine, but some days it just doesn't. This is a work-issued laptop, on which I do NOT have administrator privileges, so updating drivers or mucking with the BIOS is out of the question. Since it isn't reliably reproducible, and I work from home, getting the company's IT department involved would be an exercise in futility. The only ways I've found to fix it are to reboot, or to superstitiously flip the USB-C connector over a time or two. I am a software engineer and electronics technician, so I have some small expertise. I believe the display driver is to blame, but I can't prove anything. I think there's some boot-time sequence that doesn't always go just right. FWIW, my display adapter shows as Intel(R) Iris(R) Xe Graphics, Driver Version 31.0.101.3959. It's very frustrating and annoying when it happens, but I don't have any better solution than this.

2 of 5

1

Dude, I had the exact same problem and I tried your solution and it worked! Thank you so much! Now I’m curious what caused it as well. I know I recently updated my GeForce drivers so maybe after certain updates you have to do a hard reset?

Find elsewhere

Google Bing Mojeek

Apple Community

discussions.apple.com › thread › 254703017

Apple Lightning to Digital AV Adapter won't work on iPhone ...

Now make sure “Accessories” is turned on and plug the AV adaptor in. The upgrade should process for the device and the phone should recognize the adaptor. Good luck! Figuring this out and getting it to work on my iPhone 13 when Apple support kept telling me it was my TV was quite annoying! ... Digital AV Lightning Adapter not working post-IOS 17 Using iPhone 14 Pro Max. Using an apple model A1438 lightning digital AV adapter to connect HDMI ...

Uni Accessories

es.uniaccessories.com › home › blog

[Solved] USB C to HDMI Adapter Cable Not Working in 2023 - uni

I’m trying to watch my phone on my tv. ... Hey Ned, you mentioned the usb c to HDMI works with laptop but not your S9. It seems the usb c to HDMI is just fine, the issue should be S9 connection. Check out the complete steps, To connect the HDMI Adapter to your device, follow these steps: ·

Upbeat Geek

upbeatgeek.com › home › tech › why is my hdmi not working? how to fix it

Why Is My HDMI Not Working? How To Fix It - Upbeat Geek

April 7, 2024 - If that doesn’t work, try restarting ... upon booting. In case of HDMI adapter issues, the problem could be compatibility or a defect in the adapter itself....

YouTube

youtube.com › watch

Troubleshooting Guide: USB C to HDMI Adapter Cable Not ...

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

Anker

anker.com › home › blog center › hubs-and-docks › hdmi adapter not working: issues and how to fix them

Troubleshooting HDMI Adapter Not Working: Solutions and Tips - Anker US

August 13, 2024 - Therefore, make sure your cables or adapter are not placed near devices that produce powerful electromagnetic signals. Resolution Mismatch: Incorrect display settings may cause the HDMI Adapter such as VGA to HDMI adapter not working.

Microsoft Answers

answers.microsoft.com › en-us › windows › forum › all › usb-c-to-hdmi-adapter-doesnt-work › 24358f4d-77f7-4b11-a65f-0cffa50256fc

USB-c to hdmi adapter doesn't work

Top answer

1 of 5

25

Not all USB-C ports support video output. You should check the specifications on your particular model.

Only USB-C port with USB 3.1 or above version can stream video.

2 of 5

2

Hi Lucy. I'm Greg here to help.

I see a lot of reported issues with USB-C to HDMI adapters, in fact any adapters for monitors in Windows are very likely not to work for many reasons because the native method is always much, much better.

But you can troubleshoot USB-C to HDMI monitor connections not working to see if one of these fixes work - I've collected them all:

https://sortatechy.com/usb-c-cable-with-monitor/

https://www.partitionwizard.com/partitionmanage...

https://usbcafe.com/usb-c-to-hdmi-not-working-s...

https://uniaccessories.com/blogs/blog/solved-us...

https://www.youtube.com/watch?v=7IRLYIXz2TA

Feel free to ask back any questions. If you'll post back detailed results then I may know what to suggest next, if necessary.

______________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.

Selore

seloreglobal.com › blogs › selore › troubleshooting-usb-c-to-hdmi-adapter-issues-a-comprehensive-guide

Troubleshooting USB C to HDMI Adapter Issues: A Comprehensive Guide – Selore

The USB C or HDMI ports on your device or external display may not function properly due to physical damage, loose connections, or long-time wear. Connect other peripherals to the same ports to see if they work properly.

Dockteck

dockteck.com › home › troubleshooting usb-c to hdmi adapter: tips for fixing this common issue

Troubleshooting USB-C To HDMI Adapter: Tips for Fixing This Common Iss – Dockteck

Some adapters are incompatible with the devices, while others work perfectly. We suggest conducting online research to discover the best HDMI adapter for your devices. Try switching on and off your phone and device while the connection is established. The action will restart the connection and eliminate compatibility if any. Sometimes the USB C to HDMI may not work properly because the device cannot recognize the connection properly.

Vcom

vcom.com.hk › shows › 169 › 438.html

How to Solve USB C to HDMI Adapter/Docking Not Working - Blog - - VCOM International Ltd

Check the functionality of each connection component: Ensure that the USB-C adapter, HDMI cable, and HDMI display are all working correctly by testing them individually. You can try using the HDMI cable with another device or connecting the USB-C adapter to a different computer.

Cabletime Tech

cabletimetech.com › home › knowledge › knowledge

Troubleshooting USB-C To HDMI Adapter: Tips for Fixing This Common Issue

December 13, 2023 - To narrow down the cause of the problem, try connecting the USB-C HDMI adapter to another compatible device. This procedure allows you to determine whether the problem is in the adapter itself or in a specific device to which you initially connected. If other devices recognize the adapter and work correctly, the problem may be related to the settings or compatibility of the original device.

Microsoft Learn

learn.microsoft.com › en-us › answers › questions › 4291173 › usb-c-to-hdmi-adapter-doesn-t-work

USB-c to hdmi adapter doesn’t work - Microsoft Q&A