Why Isn't My Monitor Making Sound? Common Causes and How to Fix Them
You plug in your monitor, open a video, and — silence. No audio, no error message, just nothing. Before you assume something is broken, it helps to understand how monitor audio actually works, because the fix is almost always simpler than it seems.
How Monitor Audio Works (And Why It Often Doesn't)
Most monitors don't produce sound on their own. They rely on a chain of connected components: the source device (your PC or laptop), the cable carrying the signal, and the monitor's built-in speakers (if it has them). If any link in that chain breaks down, you get no audio.
The key variables are:
- Whether your monitor has built-in speakers at all
- Which cable type you're using
- Which audio output your operating system has selected
- Whether your monitor's volume is set correctly
Each of these works independently, which means the problem could be hiding in just one of them.
Does Your Monitor Actually Have Speakers?
This is the first thing to verify — and many people skip it. 🔍
A large number of monitors, especially budget and professional display-focused models, ship without any built-in speakers. Manufacturers often leave them out to cut costs or because their target users (photo editors, gamers using headsets, office workers) typically use external audio.
How to check:
- Look for a small speaker grille on the bottom or sides of your monitor
- Check the monitor's spec sheet or product page for "Built-in Speakers" or "Audio Output"
- Look for a 3.5mm headphone jack on the monitor itself — this is a strong indicator speakers are present
If your monitor has no speakers and no headphone jack, you'll need external speakers or a headset connected to your PC or laptop directly.
Cable Type Matters More Than Most People Realize
Not all cables carry audio. This is one of the most common causes of silent monitors, and it trips up even experienced users.
| Cable Type | Carries Audio? | Notes |
|---|---|---|
| HDMI | ✅ Yes | Carries both video and audio by default |
| DisplayPort | ✅ Yes | Also carries audio, but less commonly configured |
| DVI | ❌ No | Video only — no audio signal |
| VGA | ❌ No | Analog video only — no audio |
| USB-C (with DP Alt Mode) | ✅ Usually | Depends on the cable and device support |
If you're using a DVI or VGA cable, your monitor will never produce sound through that connection, regardless of settings. You'd need a separate audio cable (3.5mm) run from your PC to the monitor's audio input, if the monitor supports it.
Checking Your OS Audio Output Settings
Even with the right cable and a speaker-equipped monitor, sound won't play if your operating system isn't routing audio to the correct device. This is probably the most common fixable cause.
On Windows:
- Right-click the speaker icon in the taskbar
- Select "Sound settings" or "Open Sound settings"
- Under Output, check which device is selected
- If your monitor appears as an option (often listed by its model name or as "HDMI Output"), select it
On macOS:
- Open System Settings → Sound
- Under Output, look for your monitor listed as a display audio device
- Select it and check the volume slider isn't at zero
A common scenario: you unplug a headset and your system switches audio output to your headset's old profile, leaving your monitor unselected. Windows and macOS both do this automatically, often without notifying you.
Monitor-Side Volume Controls
Even when everything else is configured correctly, your monitor's own volume may be turned down or muted. Most monitors with speakers have an OSD (On-Screen Display) menu accessible through physical buttons on the side or bottom of the panel.
Look for an audio or volume section in that menu. Some monitors also have a dedicated volume dial or buttons. It's not uncommon for these to default to zero out of the box.
Driver and Firmware Considerations
If your monitor shows up in audio settings but produces distorted or no sound despite being selected, a driver issue may be involved. HDMI and DisplayPort audio rely on your graphics card's audio driver, not just your standard sound card driver.
On Windows, this audio device typically appears as something like "NVIDIA High Definition Audio" or "AMD High Definition Audio" in Device Manager. If that driver is missing, outdated, or corrupted, the monitor won't output audio correctly even if the hardware is fine.
Updating your GPU drivers through NVIDIA GeForce Experience, AMD Adrenalin, or Intel's driver support tool often resolves this without any manual tweaking.
When There's a Split Between What You See and What You Hear
Some setups intentionally separate video and audio paths — for example, running DisplayPort to a monitor for the image while sending audio through a USB DAC, a soundbar, or directly through the motherboard's 3.5mm jack. In these cases, the monitor was never part of the audio chain to begin with.
This becomes relevant when troubleshooting: if someone else configured your system or you're working on a shared machine, the audio routing may have been set up deliberately to bypass the monitor entirely.
The Variables That Shape Your Situation
What makes this genuinely tricky is that the same symptom — no monitor sound — can have five or six different causes, and the right fix depends entirely on your specific setup:
- Your monitor model (speakers present or absent)
- Your cable type (HDMI, DisplayPort, DVI, VGA)
- Your OS and its current audio output selection
- Your GPU driver version
- Whether your monitor's OSD volume is set above zero
- Whether your system is routing audio through a different device entirely
Two people with the same problem could need completely different fixes. Someone using HDMI with a speaker-equipped monitor likely just needs to change their OS output device. Someone using VGA needs a different cable or a separate audio solution altogether. Someone with a display-only monitor needs to rethink their audio setup entirely.
Understanding which of these applies to your configuration is the actual work — and that depends on what's sitting on your desk. 🖥️