To connect a soundbar to a PC with HDMI, the single most important rule is this: your soundbar must have an HDMI IN port for a direct cable connection. If it only has an HDMI ARC/eARC port, you cannot plug your PC straight into it, you must route the audio through a TV or monitor that has an ARC/eARC port, which is the more common setup. There are two reliable paths: a direct PC-to-soundbar HDMI link (only if the soundbar has an HDMI IN) or a passthrough chain where the PC connects to a TV, and the TV sends audio to the soundbar via ARC/eARC. If your TV lacks ARC, you can still connect soundbar to TV without HDMI ARC using optical or auxiliary cables, and if you need to connect a soundbar to Vizio TV specifically, the on-screen menu labels differ slightly from other brands.
Before you connect a soundbar to your PC with HDMI, the one port rule
Understanding the port labels on your soundbar is the difference between a working setup and a frustrating hour of silence. HDMI ARC (Audio Return Channel) and eARC (Enhanced Audio Return Channel) are designed to send audio from a TV to a soundbar, they are not inputs for a laptop or desktop. For a direct PC-to-soundbar connection, you need a dedicated HDMI IN port, which is rare on soundbars. If your soundbar lacks that, your only option is the passthrough method: PC → TV → soundbar via ARC/eARC. Check both devices before buying any cables.
Check your ports: HDMI OUT on the PC, HDMI IN or ARC on the soundbar
Physically inspect the back of your PC’s graphics card (or laptop’s side) for an HDMI OUT port, this is where the video signal originates. On the soundbar, look for one of two things: a port labeled “HDMI IN” (usually numbered, like HDMI 1 or 2) or a port labeled “HDMI OUT” or “TV-ARC” (often with a small ARC logo). If you see only the ARC/eARC port, you cannot connect the PC directly. If you see both an HDMI IN and an HDMI OUT (ARC), you have two possible setups. The direct method works only with the HDMI IN; the passthrough method uses the ARC port on the soundbar and the TV’s ARC port.
Direct method: connect PC HDMI OUT to soundbar HDMI IN
This is the simplest chain, but it works only if your soundbar has a genuine HDMI IN port. Plug one end of an HDMI cable into your PC’s graphics card HDMI OUT, and the other end into the soundbar’s HDMI IN. To fix it, open your graphics card control panel (NVIDIA or AMD) and either disable the soundbar as a display or set it to mirror your main monitor. Then, right-click the speaker icon in the Windows taskbar, select “Sound settings” (Windows 11) or “Playback devices” (Windows 10), choose the soundbar from the list, and click “Set Default.” If you don’t see it, right-click in the list and enable disabled devices.
Passthrough method: connect PC to TV, then TV ARC to soundbar
This is the most common and reliable way to connect a soundbar to a PC with HDMI. Connect your PC’s HDMI OUT to any HDMI IN on your TV or monitor. Then, take a second HDMI cable and connect it from the TV’s HDMI ARC (or eARC) port to the soundbar’s HDMI OUT (labeled ARC/eARC) port. Also, enable HDMI-CEC (Consumer Electronics Control) on the TV, this allows the TV to automatically route audio to the soundbar and lets the soundbar’s remote control the TV volume. On the PC, the audio will still be sent to the TV via HDMI, and the TV will forward it to the soundbar through ARC.
Set the HDMI audio device as default in Windows 10 or 11
After the physical connection, you must tell Windows which device to use. Click the speaker icon in the system tray (bottom-right corner). In Windows 10, right-click the speaker icon, choose “Open Sound settings,” then under “Output” select the correct HDMI device from the dropdown. If you don’t see the HDMI option, restart your PC with the cable connected.
Adjust sound properties for better audio from your soundbar
Once the soundbar is the default device, you can fine-tune the audio quality. Right-click the speaker icon, select “Sound settings” (Windows 11) or “Playback devices” (Windows 10), then right-click the HDMI device and choose “Properties.” Go to the “Enhancements” tab, here you’ll find options like Bass Boost, Virtual Surround, and Loudness Equalization. Enable these to add depth and clarity to movies and games, but disable them if you prefer a flat, accurate sound for music.
No sound? Quick fixes and testing your HDMI audio
If you’re using the passthrough method, check your TV’s audio output setting is set to “ARC” or “External speakers,” and confirm that HDMI-CEC is enabled. Finally, check that the volume is up on all three devices: Windows, the soundbar, and the TV (if used). Then play a test video or audio file. If sound still doesn’t come through, try a different HDMI cable, some older cables don’t support ARC or high-bandwidth audio. Also, remember that connecting a soundbar directly to a PC can sometimes create a phantom display; if your mouse cursor disappears, open your graphics control panel and disable the soundbar as a display, which will not affect audio output.
