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.I want to connect my ACER laptop (with the latest Windows 10) to my TV using a HDMI cable. The video signal is transmitted perfectly, but the sound still plays on the laptop. I’ve tried on both an LG and a Samsung TV and have the same problem. The “Sound Settings” only show the laptop speakers.
Any suggestions? Thank you
Now, go through both laptops and compare the sound-related settings that they have in common. Since the laptops are two different brands, they may not have the same controller chip for their sound output, that’s why you can only compare the settings they have in common. Chances are that one of those settings is the “culprit” for your lack of sound from the Acer laptop via the HDMI cable.
Since both systems are laptops, see if you can do the comparison with them literally side by side to make things a little easier for yourself.
One more thought in addition to what I just stated above-the lack of sound output from the Acer via the HDMI cable could also indicate a physical problem with the HDMI port on the Acer. By that, I mean that either there’s possibly no signal going to the specific pin or pins that are supposed to send the audio output through the cable to be received by the device on the other end of the cable, or that there’s a problem with the pin/s in the Acer’s HDMI output jack that prevents them from making physical contact with the connector from the cable.
Sorry if you misunderstood, but I never meant for you to go looking in the machine’s BIOS, and I never stated that above. I meant for you to do as has been suggested below, and look in the sound settings within Windows.
Sorry if I made it seem as if you needed to look in BIOS at all.
After having read your response about having an Intel UHD 620 graphics setup, and having read others’ replies to you,
within graphics control panels, HDMI sound settings may reside
I would suggest looking in the properties of your graphics adapter (Intel 620 UHD) to see if there are any settings related to an HDMI source for sound. If there is at least a listing for an HDMI port for sound within those properties, then I would hope we can help you try to get that successfully enabled.
@Microfix and @EP can probably best guide you through the process.
Thanks for showing the properties screens of the actual adapter, but that’s not exactly what I had in mind. Sorry. 
I’m going to cut this off here to avoid mixing things up with the thread’s progression below, and will continue things below so that @EP and @ Microfix can see what’s been suggested along with @Alex5723 .
Please see my response below, beneath your reply number 2320477. That’s at the bottom of this thread as this post is being written.
Right-click on the little speaker icon on the notification area on the taskbar. Then choose “Open sound settings”.
Is there more than one option in “Choose your output device”?
Windows 10 Pro 22H2
Check your ACER User Guide: does it address what to expect on audio when HDMI is connected?
It just explains how a HDMI works and says how good it is. Screenshot attached. “The single cable keep everything neat and tidy while ensuring the best connection and the best audio and video quality.
what kind/model and/or series of Acer laptop PC are you using, WSepzcaw?
Acer Aspire, Acer Predator, Acer Swift, Acer Travelmate, etc. – which is it?
Run MSINFO32.exe from the run dialog box or run the Speccy tool to gather more information about your Acer laptop because that info in your 1st post is too vague
Does this particular Swift 5 model have a GeForce Graphics card or intel?
Reason I ask is, within graphics control panels, HDMI sound settings may reside to check over.
have you checked over the settings within the graphics card control panel? Usually within control panel or right click desktop for quick access
HDMI does not appear when I select manage audio devices – the only output device is the laptop speaker system.
Have you checked the settings with the HDMI cable attached ?
Do you not have this?
I just hdmi’d an Acer Aspire v15 V3-575G laptop to our Panasonic plasma. Played something on You Tube and sound and video worked fine, sound only from TV, not laptop as it should be. I just plugged it in, nothing else.
My Acer documentation is identical to yours, perfunctory.
(As an aside, this laptop has an NVidia graphics card in it but has never been set to use Nvidia HD Audio, so it’s similar to yours, uses Intel audio.)
Clicking on the Windows Sound icon, taskbar, far right, it said “panasonic tv intel display audio.”
Going into Control Panel>Sound, intel display audio was green checked as default for the TV.
With your laptop connected to the TV and video playing on the TV, follow my steps above. If intel display audio is not visible anywhere, updating the driver for Intel Graphics 620 will install the audio driver also.
Before doing that, it’s simpler to go to Control Panel>device manager and look for intel display audio in Sound Video and Game Controllers, it should appear. Click on it, open driver tab and update the driver. Windows will take you through the process, just pick what is suggested, the driver should already be in your laptop. This may work, if not, stay in device manager, go up to display adapters, click on yours and update that driver.
One more thing to try before the big driver update is Troubleshooting, either in Control Panel>Troubleshooting>hardware and sound audio playback or Settings>Update and Security>Troubleshoot>Additional Troubleshooters>Playing Audio
If you use the Settings Gear Thing and not control panel, Control Panel is in C:\Windows\System32\Control Panel (or Control.exe). Also in Start Menu>Windows System>Control Panel. Shortcut it if you want to keep using it; drag to desktop.
Intel HD Graphics Driver:
https://downloadcenter.intel.com/download/30066/Intel-Graphics-Windows-10-DCH-Drivers
Use the .exe version; it’s easier to install.
Audio in Windows is amazingly confusing, every speaker set, every microphone and every input set has a name and a way of connecting together, sometimes many ways. I have a small sound bar that decided it’s a monitor and it works, so I’ll let it continue to fool itself. 
Good Luck!
Cable can be to blame?
Internet says:
If you’re using a set-top or cable box: Make sure the volume is turned up. You also may need to go into the set-top box menu and select HDMI in the Audio Settings or Audio Coding section to pass the audio to the TV.
I came to this threat late, but I would start from the easiest – check the cable and TV settings.
Dell Latitude 3420, Intel Core i7 @ 2.8 GHz, 16GB RAM, W10 22H2 Enterprise
HAL3000, AMD Athlon 200GE @ 3,4 GHz, 8GB RAM, Fedora 29
PRUSA i3 MK3S+
I’ve tried with a different laptop (older ASUS) and it works fine.
When the ASUS is connected to the TV, the TV speakers are listed and can be chosen as the output device. Sound comes from TV speakers.
When the ACER is connected to the TV, the only output option is the computer’s speakers and the sound comes from the laptop speakers.
Everything else is the same, HDMI cable, TV, same TV HDMI socket, TV settings.
It seems that the ACER does not detect the HDMI connection to the TV speakers.
Found this on some other forrum. Have you tried update video drivers? Seems illogical on first sight, but it makes great sense to me
Download the latest from official Acer web.
sallyM :
Hello,I’m using an HDMI connection and can get sound from the computer and and excellent picture but no sound from the TV speaker. Is this a problem with the TV or the computer? What do I need to do?I had this probelm for ages. Then my friend told me the prblem has nothing to do with the audio drivers. You have to update your video drivers! He done this problem solvd in 10 minutes.
Dell Latitude 3420, Intel Core i7 @ 2.8 GHz, 16GB RAM, W10 22H2 Enterprise
HAL3000, AMD Athlon 200GE @ 3,4 GHz, 8GB RAM, Fedora 29
PRUSA i3 MK3S+
Its not a major problem as I was able to use the other laptop so see my grandaughter singing at her concert on Zoom last night – which was the point of the exercise. And if the need arises again, that should still be an option.
Interestingly, I have another sound issue with the ACER. When I am Zooming with it the sound at the other end does not always work – sometimes fine, sometimes intermittent, sometimes non-existent. (I can hear the other participants fine). I had a discussion here, thought it was sorted and then it happened again. Being intermittent made it really annoying, so I gave up and just use the ASUS now for Zooming.
So maybe there is a problem with the sound card. Above my pay grade to deal with!
As long as the ASUS is working, I will manage.
Thanks for all your help.
I’m the anonymous poster for post numbers 2320370, 0471, 0493 and 0496 above. After reading your post right above (#2320670), especially the part about others having a hard time hearing you due to poor quality audio, along with the other posts indicating what you’ve tried, I now believe that your Acer does indeed have a hardware problem, but with the audio processor portion of the chipset on the laptop’s motherboard. Definitely not something that’s easily repaired without a factory service center. 
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