How to Fix Screen Recording Has No Audio on Windows 11 — The Audio Source That Nobody Selects

You spent 30 minutes recording a software tutorial. You narrated every step, demonstrated every feature, and clicked through every menu. You stopped the recording, opened the file, pressed play, and heard absolute silence. The video is perfect — every mouse movement, every screen transition captured in crisp detail. But the audio track is completely empty. Not quiet. Not muffled. Empty. Zero waveform. Dead silence.

Now you have to record the entire thing again.

This is one of the most common and frustrating problems in screen recording, and it happens because of a fundamental misunderstanding about how audio capture works on Windows. People assume that pressing “Record Screen” records everything — video and audio. It records the video automatically because screen capture is straightforward: the recorder grabs what the GPU is outputting to the display. Audio, however, requires a separate and explicit configuration because Windows has multiple audio sources and the recorder needs to be told which one to capture.

Why Screen Recordings Have No Audio

Windows has a complex audio architecture with multiple devices and streams:

Output devices (what you hear): your speakers, headphones, HDMI audio to a monitor, Bluetooth headset — these are where audio plays. Each is a separate device in Windows.

Input devices (what you speak into): your microphone, webcam mic, headset mic, USB mic — these capture your voice.

Loopback audio (what the system plays): this is the audio stream that represents “everything playing on your computer” — music, video, system sounds, game audio. It is not a physical device but a software concept.

When you record your screen, the recording tool needs to capture two types of audio:

1. Desktop audio (system sound): whatever is playing through your speakers — the tutorial audio, the app sounds, the video you are demonstrating
2. Microphone audio (your voice): your narration or commentary

Most recording tools do NOT automatically capture desktop audio. They need to be explicitly configured with the correct audio source. If you do not configure this, the recorder captures video and microphone (if configured) but zero system audio.

The Fix for OBS Studio (The Most Common Setup)

OBS Studio is the most popular screen recording tool, and its audio configuration is the most common source of the “no audio” problem.

Check the Audio Mixer panel at the bottom of the OBS window. You should see two entries:

• Desktop Audio: captures your system audio
• Mic/Aux: captures your microphone

If Desktop Audio is not visible in the mixer, or if it shows a red mute icon, or if the level meter shows no movement even when audio is playing on your computer — that is your problem.

Fix Desktop Audio:

1. Go to Settings → Audio
2. Under Global Audio Devices, find Desktop Audio
3. Change it from “Default” to your specific output device name (like “Speakers (Realtek High Definition Audio)” or “Headphones (USB Audio Device)”)
4. Click Apply then OK

The reason “Default” sometimes fails is that Windows’ concept of the default audio device and OBS’s concept can desync, especially after plugging in or unplugging audio devices. Setting the specific device name eliminates this ambiguity.

Verify it works: play some audio on your computer (a YouTube video works) and watch the Desktop Audio meter in the OBS Audio Mixer. You should see the green bars moving in response to the audio. If the bars move, OBS is capturing desktop audio correctly.

Common OBS audio mistakes:

• Desktop Audio is muted (speaker icon in the mixer has an X) — click it to unmute
• Desktop Audio volume slider is at zero — drag it to the right
• The wrong audio track is selected for recording — go to Settings → Output → Recording and make sure Audio Track 1 is checked
• Audio monitoring is set to “Monitor Only” instead of “Monitor and Output” — right-click the audio source → Advanced Audio Properties → set Audio Monitoring to “Monitor Off” (the recording still captures it; monitoring is for your headphones during live streaming)

Enabling Stereo Mix (The Universal Fix)

Some recording tools — especially simpler ones that do not have OBS’s audio routing — cannot capture desktop audio directly. For these tools, you need to enable a Windows feature called Stereo Mix.

Stereo Mix is a virtual audio input device that captures a copy of whatever audio is playing through your speakers. When enabled, any recording tool can select Stereo Mix as its audio input and capture system audio.

How to enable Stereo Mix:

1. Right-click the speaker icon in the system tray → Sound settings → scroll down → More sound settings (or directly: right-click speaker → Sounds)
2. Click the Recording tab
3. Right-click in the empty area → check “Show Disabled Devices”
4. Stereo Mix should appear (grayed out, disabled)
5. Right-click Stereo Mix → Enable
6. Optionally: right-click → Set as Default Device (only do this if you want all recording tools to use it by default)

Once enabled, Stereo Mix appears as an audio input source in any recording software. Select it as the microphone or audio input in your recording tool, and it will capture all system audio.

Note: some audio drivers do not support Stereo Mix, particularly Realtek drivers on newer laptops where the manufacturer has disabled this feature. If Stereo Mix does not appear even after showing disabled devices, your audio driver does not expose it. In that case, use OBS (which has its own capture mechanism) or install a virtual audio cable.

Virtual Audio Cable (When Stereo Mix Is Unavailable)

If Stereo Mix is not available on your system, you can install a free virtual audio cable that creates a similar loopback:

VB-Audio Virtual Cable (free) creates a virtual audio device that routes audio from one application to another. After installation:

1. A new device called “CABLE Input” appears in your playback devices
2. A corresponding “CABLE Output” appears in your recording devices
3. Set “CABLE Input” as your Windows default playback device (audio now routes through the virtual cable)
4. In your recording tool, select “CABLE Output” as the audio input
5. The recording tool now captures all system audio through the virtual cable

The downside is that with the virtual cable set as default, you will not hear audio through your normal speakers unless you also configure monitoring. VB-Audio Voicemeeter (also free) provides a more sophisticated mixing solution that allows you to hear the audio AND route it to a recording tool simultaneously.

Windows Game Bar (The Simple Solution)

If you just need a quick screen recording with audio and do not want to configure OBS or deal with audio routing, Windows Game Bar is the easiest option:

1. Press Windows + G to open Game Bar
2. Click the gear icon → Capturing
3. Under “Audio to record,” select All (captures game/app audio and microphone) or Game (captures only the app audio)
4. Press Windows + Alt + R to start recording

Game Bar automatically captures audio from the focused application without any audio source configuration. The trade-off is that it can only record one application at a time (not the entire desktop), and it does not work with all applications.

Recordings are saved to C:\Users\YourName\Videos\Captures by default.

The Volume Level Problem

Even when audio is being captured, the recording might sound too quiet. This happens because the recording captures audio at whatever volume level Windows is outputting.

If your Windows volume is set to 30%, the recording captures audio at 30% volume. This sounds fine through speakers or headphones (because you set it to a comfortable listening level) but produces a quiet recording.

Fix for OBS: in the Audio Mixer, right-click the Desktop Audio meter → Advanced Audio Properties → increase the Volume % above 100% to boost the captured level.

Fix for other tools: before recording, set your Windows volume to 70-100% and adjust your speaker or headphone volume using the hardware volume control (the physical knob or buttons) instead. This sends a full-volume signal to the recording tool while keeping your listening volume comfortable.

Post-recording fix: if you already recorded a quiet video, use Audacity (free) to amplify the audio track. Import the recording, select all, go to Effect → Amplify, and increase the level. Export the amplified audio and use a video editor to replace the quiet audio track with the amplified one.

Screen recording without audio is a solvable problem, but it requires understanding that video capture and audio capture are independent systems on Windows. The recorder captures video automatically because there is only one screen output. Audio requires explicit source selection because there are multiple audio devices. Tell the recorder which audio device to capture — through direct selection, Stereo Mix, or a virtual audio cable — and the silence disappears.