First establish where the sound stops
A system that has no sound anywhere needs a different test from a single app that is muted or using the wrong output. Start with a short local sound or another known-working app, then test built-in speakers, wired headphones or a different output if available. Do not infer that the speaker hardware has failed from one silent app.
If the output device is missing entirely, treat detection and driver status as the next question. If the device is listed and the volume meter moves but no sound is audible, check the selected output, physical mute controls, connection and audio format before reinstalling software.
| Symptom | Likely area to investigate | First test |
|---|---|---|
| Only one app is silent | App volume, app output selection or app state | Check the app's volume and output device. |
| All apps are silent | Windows output, mute, connection or audio service | Select the intended output in Settings > System > Sound. |
| No audio device appears | Detection, driver, disabled endpoint or firmware | Check Device Manager and the device manufacturer's support page. |
| Sound works but microphone does not | Input selection or privacy permissions | Check the selected input and microphone permissions. |
| Sound goes to a monitor or dock | HDMI/DisplayPort audio endpoint selected by Windows | Choose speakers or headphones as the output. |
Check output device, volume and physical connections
Open Settings > System > Sound and select the output you actually use. A monitor connected over HDMI or DisplayPort can appear as an audio output even when the monitor has no speakers. USB headsets, docking stations and Bluetooth devices can also become the selected output after reconnection.
Raise the system and app volume, inspect the volume mixer for a muted application, and check the headset's inline controls or laptop hardware mute key. For wired devices, reconnect the plug and test another supported port or another headset. For Bluetooth, first confirm that the accessory is paired and then check audio output selection.
- Select the expected speakers or headphones under Settings > System > Sound.
- Open the volume mixer and make sure the affected app is not muted or routed elsewhere.
- Disconnect unnecessary audio outputs temporarily and test again.
- Try a second app or known-working headset to separate software from hardware.
Use the troubleshooter before making driver changes
On Windows 11, start with the audio troubleshooter in the Get Help app or Settings > System > Troubleshoot > Other troubleshooters where available. Test after each action so the cause remains clear.
If audio enhancements are enabled, temporarily turn them off and retest. Enhancements, spatial audio and vendor control-panel effects can change processing and can sometimes be part of the problem. If sound becomes distorted only at a particular sample rate or format, restore the original setting if the test makes things worse.
If audio stopped after a Windows or driver update
Record which update or driver preceded the failure. In Device Manager, check the audio device's status and use Windows Update or the PC maker's exact support page for an appropriate driver. If the problem began immediately after a driver update and Roll Back Driver is available, a controlled rollback may be more informative than installing several drivers in succession.
Restarting Windows Audio or Windows Audio Endpoint Builder may help in some cases, but service changes are an advanced step. Save open work first and do not alter unrelated services. Avoid downloading driver packages from unofficial mirrors.
- Keep the current driver version and error code before changing anything.
- Do not uninstall every audio-related device at once; you may lose useful vendor-specific functionality.
- If sound works through one output but not the built-in speakers, test the hardware path and manufacturer diagnostics rather than assuming Windows is entirely broken.
Microphone not working is an input problem
A working speaker does not prove the microphone works. Open Settings > System > Sound and check the selected input device and input meter. Then open Settings > Privacy & security > Microphone and confirm that microphone access and the relevant app permissions are enabled. Desktop apps have a separate access toggle on supported Windows versions.
Test the microphone in Windows Sound settings or a built-in recording app before changing the conferencing app. If it works there but not in one meeting app, check that app's own input selection and permissions.
This guide summarizes Microsoft's Windows audio and microphone troubleshooting workflows. It is not a claim of a universal fix or a reproduced failure on every sound card. Menu names and driver options differ by device, Windows version and audio software.
See the evidence behind this topic
These TWW research pieces examine the measurements, mechanisms, or testing questions related to this guide. Research pages distinguish measured results from general technical guidance.
- Windows Shows 100% Disk Usage but Very Low MB/s: What Is Actually Happening?100% active time is not the same thing as 100% storage bandwidth. The difference is the key to diagnosing many Windows disk complaints.
- Does More RAM Actually Make Windows Faster? What to Measure Before UpgradingYes—when memory capacity is the bottleneck. If Windows already has enough memory for the workload, adding more RAM may make little or no measurable difference.
Sources & further reading
Frequently asked questions
Why does Windows show sound but I hear nothing?
Windows may be routing audio to a different output, including a monitor or dock, or the physical device may be muted or disconnected. Select the intended output and test another app.
Why does sound work in one app but not another?
Check that app's volume, in-app output selection and audio session before changing system drivers.
Should I reinstall my audio driver first?
No. Check output selection, volume, connections and the troubleshooter first. If the issue began after a driver update, record the version and consider a supported rollback.
Why is my microphone not detected?
Check the selected input, privacy permissions, app permissions and Device Manager. A microphone and a speaker use separate input and output paths.
We distinguish documented facts, measured results, and informed guidance. If a claim depends on a specific device, software version, game, or test method, that context should be stated rather than implied.
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