Buzzy, mushy sound

Question

Just got a new PC and when sound happens, it's mushy and not clear. It gets worst the higher the sound. How do I fix this? The PC is a Dell Inspiron

Answer 1

Follow these steps in order on the Dell Inspiron:

1. Check the output device and basic connections
   • Select the Speakers icon on the taskbar.
   • Select the arrow to the right of the volume slider and make sure the preferred speakers/headphones are selected as the output device.
   • If using external speakers/headphones, verify cables are fully plugged in, in the correct jack (usually green or labeled “headphone”), and that their own volume controls are turned up and not muted.
2. Run the Windows audio troubleshooter
   • Open the Get Help app and run the audio troubleshooter using the “Troubleshoot audio issues” option. It will automatically diagnose and attempt to fix common sound problems.
3. Try different audio formats (can fix distortion/mushy sound)
   • In the search box on the taskbar, type control panel and open it.
   • Go to Hardware and Sound > Sound.
   • On the Playback tab, right‑click the Default Device (the speakers/headphones in use) and select Properties.
   • Go to the Advanced tab.
   • Under Default Format, choose a different format (for example, try a lower sample rate/bit depth), select OK, then test audio. If still mushy or buzzy, repeat with another format.
4. Update or reinstall the audio driver
   • In the search box on the taskbar, type device manager and open it.
   • Expand Sound, video and game controllers.
   • Right‑click the Dell/Realtek audio device and select Update driver > Search automatically for updated driver software and follow the prompts.
   • If the issue persists, in Device Manager right‑click the same audio device, select Uninstall device, check Delete the driver software for this device if available, and select Uninstall.
   • Restart the PC so Windows reinstalls the audio driver automatically.
   • If still distorted, in Device Manager right‑click the audio device again, choose Update driver > Browse my computer for drivers > Let me pick from a list of device drivers on my computer, select High Definition Audio Device, then Next and follow prompts. Test the sound again.
5. Check for and apply Windows Updates
   • Select Start > Settings > Update & Security > Windows Update > Check for updates.
   • Install any available updates, restart, and test audio.

If audio remains buzzy/mushy after these steps, test with a different set of speakers/headphones. If the distortion is present on all devices, contact Dell support, as the built‑in audio hardware on the new PC may be faulty.

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References:

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• How to get Win 11 to permanently recognise a sound output source (or not recognise one permanently) - Microsoft Q&A
• Audio garbled after new Windows 10 installation - do I need different drivers? - Microsoft Q&A