If you’re using a graphics card and trying to switch to the motherboard’s HDMI, it simply won’t work! You mustenable the iGPU settingor at leastset the Primary Video Device to integrated graphics.
The same applies to users attempting tohook multiple monitors— one connected to the GPU and the other to the motherboard.
Your motherboard HDMI also may not work due to one of the following reasons:
Don’t worry! I will guide you through solutions to fix the HDMI issue on your motherboard.
Check Physical Connectivity and Damages
First, let’s rule out possible connection issues. Is theHDMI cable loosely connectedto the monitor or motherboard? Or do you see any bent pins in the HDMI port?
Depending on the issue,try a different cableoruse another video port. For instance, use a DisplayPort or VGA cable if theHDMI cable isn’t working.
Yet getting the sameNO SIGNAL issue? I advise connecting your motherboard to a spare monitor if you own one.
If this worked, you may confirm that there’s an underlying issue with your motherboard. So, you may jump straight to the ‘Final Troubleshooting‘ section below.
If not, I believe you have agraphics card installed. And I’m pretty much sure you’re getting the display using its HDMI port.
Thus, the problem likely exists with the integrated graphics. There’s no need to worry though! The next troubleshooting steps are focused on the same and should help youenable the motherboard’s HDMI.
Ensure CPU Supports Integrated Graphics
Before that, I want you to confirm whether your CPU is packaged with iGPU. Note that most motherboards today support integrated graphics – butnot all processors support it.
If you’re already planning to get a dedicated GPU, there’s usually no need for integrated graphics. That’s the reason PC builders install a CPU that doesn’t have built-in graphics support.
you may easilyidentify your processor specificationsfrom BIOS or even Windows-based utilities. Do note that you’ll need touse one of your graphics card portsfor this.
AMD users will see a sign of‘Radeon Graphics’, meaning yours is anAPU (which is different from CPU)!
On the other hand, Intel users can get to theDisplaysection in one of the OS-based utilities. You should find an indication ofHD/Iris/UHD(as demonstrated in theSystem Informationapplication below).
Even recently whenconnecting four monitorsusing HDMI, I was getting aNo Signalmessage on my colleague’s motherboard. Little did I know that he hadinstalled aRyzen 5 2600(that required a discrete GPU).
If yours also doesn’t have iGPU support, you’ll have to rely on the graphics card. So, the only possible solution is toupgrade your processor. In case you’re ready to go for it, ensure theCPU and motherboard are compatiblewith one another.
Note:If your processor doesn’t support integrated graphics, you won’t find a relevant option in BIOS.
Configure iGPU Settings in BIOS
Now that you’ve confirmed your processor has a built-in GPU, it’s time to tweak this setting. Simply put, theoption is automatically disabledwhen youinstall a graphics card.
The exact option variesdepending on the motherboardmanufacturer and platform (Intel or AMD). Here are the general steps that apply to all:
If yours is already enabled, check if there’s aPrimary Video Devicesetting. In case the option is configured toPCIe Videoinstead ofIGFX Video, your motherboard’s HDMI port won’t work.
That’s what happened to me on myASUS PRIME B450-PLUS. To fix theHDMI port not working on your PC,switch to the IGFX Videomode and save the change.
Note:Yourgraphics card’s HDMI won’t workif you set thePrimary Video DevicetoIGFX Videoin a single-monitor setup.
Try Updating or Reinstalling Graphics Drivers
If the problem persists despite having the iGPU option enabled in BIOS, graphics drivers could be the ones to blame. Broken or corrupted drivers can sometimes lead tono display issuesas theyinterrupt the hardware-to-software communication.
Keep in mind that we’re updating the iGPU driver (not the dedicated GPU). And as with earlier troubleshooting, you’ll need to use your graphics card here.
The easiest way to do this isfrom the Device Manager. ExpandDisplay Adapters, right-select youriGPU driver, and chooseUpdate Driver. SelectSearch automatically for driversand the process should begin.
Did you get the‘best drivers are already installed’message? That’s pretty normal. In this scenario, I advisesearching for a relevant driveronWindows Update.
Sometimes, graphics drivers could be hidden insideOptional updates. Don’t forget to check that out (Advanced Options>Additional Optionssection >Optional updates>Driver updates).
Still no HDMI signal? Well, the last thing is to download andinstall the graphics driversmanually.
I prefer getting theVGA driversfrom themotherboard’sDriver & Utilitiessection on the official website. You may even try the one provided on theIntel or AMD’s Support pagetoo.
In rare case scenarios, HDMI drivers may also trigger this issue. Here’s a complete guide to help youupdate the HDMI drivers on Windows.
Final Troubleshooting
The aforementioned solutions are sure-shot fixes. But if your motherboard HDMI is yet not responding, it’s very much inclining towards a hardware failure.
I believe you’ve already done a proper inspection of the ports and cables as suggested in the beginning. Now, I want you to confirm the following and go with the fixes accordingly:
In case nothing helps, you might want tocontact your vendor. Check your warranty and report the exact issue. The manufacturer may replace your supposedly damaged board.
