Volume cranked all the way up, and still complete silence ⓒ Unsplash
Diagnosing and fixing situations where your Windows PC has no sound.
You hit play, the video starts, but there’s absolutely no sound coming through. Cranking the volume up does nothing. Audio issues can look like they have a hundred possible causes, but knowing the right order to check things resolves most of them quickly. Here’s how to diagnose and fix a no-sound problem.
1. Common Causes of No Sound
🔊 Wrong output device selected — audio routed to a monitor or virtual device instead of your speakers
🖱️ Audio driver issues — a corrupted or outdated driver
🔌 Physical connection problems — a loose cable or headphone jack issue
🔇 Mute settings — muted at the system level or within a specific app
⚙️ Settings reset after a Windows Update — an update can change audio settings unexpectedly
2. Real-World Case: No Sound After an Update, Traced to the Output Device Setting
A college student’s laptop suddenly had no sound at all right after a Windows update. Volume looked fine, and nothing was muted. Right-clicking the speaker icon in the taskbar and opening “Sound settings” revealed the output device was set to HDMI audio through their monitor, instead of the laptop’s built-in speakers. It turned out a previous session with an external monitor connected had left that setting in place through the update. Switching the output device back to the laptop speakers fixed it instantly.
3. Step-by-Step Diagnosis and Fix Sequence
🔧 Work Through These in Order
Step 1 | Check the Output DeviceRight-click the speaker icon in the taskbar and open “Sound settings” to check the current output device, and switch it to the correct one (speakers or headphones).
Step 2 | Check for Muted Volume
Check not just the system volume, but also the volume within the specific app you’re using (browser, media player, etc.).
Step 3 | Run the Audio Troubleshooter
Under Settings > System > Troubleshoot, run the “Playing Audio” troubleshooter for an automated diagnosis.
Step 4 | Check Physical Connections
If using headphones or external speakers, check the cable connection and jack, and test on a different device.
Step 5 | Update or Reinstall Audio Drivers
In Device Manager, check “Sound, video and game controllers” and update the driver to the latest version, or uninstall it and reboot to trigger an automatic reinstall if problems persist.
4. Additional Checks by Situation
| Situation | Additional Check |
|---|---|
| No sound in only one specific app | Check that app’s own volume and output device settings |
| No sound only through headphones | Clean the headphone jack, test with different headphones |
| No sound after connecting a Bluetooth speaker | Reconnect Bluetooth, re-select the output device |
| Sound issue started right after an update | Check first whether the output device setting got reset |
5. If Nothing Above Resolves It
✔ Possible hardware defect — physical failure of built-in speakers or the sound card
✔ Try System Restore — use a restore point from before the problem started, if one exists
✔ Consider an external USB sound card — a viable workaround if the built-in audio chipset itself is the problem
✔ Professional inspection — if a genuine hardware defect is confirmed, contact a service center
6. Habits to Prevent Audio Problems
🔄 Make it a habit to check output device settings after any major update
🧹 Regularly clean dust from around the headphone jack and speakers
🔌 Periodically check the condition of cable connections
💾 Check for audio driver updates regularly, just like any other driver
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Frequently Asked Questions
Q. I only lose sound in a video call app.
Check that specific app’s own audio settings separately (speaker/microphone selection within its settings menu). Many apps have their own output device configuration that’s independent of the Windows system settings.
Q. My audio is crackling or cutting out intermittently.
This often points to a driver issue, or interference if you’re using a Bluetooth device. Update to the latest driver, and if a wired connection is possible, test with that to rule out wireless interference.
Q. My computer doesn’t detect my headphones when I plug them in.
This could be a poor connection at the jack or an issue with the headphones themselves. Test with a different pair of headphones, and if the issue persists, the jack itself may need cleaning or inspection.