No sound from laptop PC

Use the built-in Windows audio troubleshooting steps to isolate whether this is a general sound problem or specific to those channels/apps.

1. Confirm Windows is sending sound to the correct device
   1. Select the Speakers icon on the taskbar.
   2. Select the arrow to open the list of audio devices.
   3. Make sure the laptop’s internal speakers (or the device actually being used) are selected, not a disconnected HDMI/Bluetooth device.
2. Check physical volume and mute controls
   1. Verify the laptop’s volume is not muted and is turned up.
   2. If the laptop has function keys with a speaker/mute icon, press them to ensure it is not “hard muted.”
   3. Right‑click the Speakers icon → Open Volume mixer and make sure none of the sliders (including the specific app used to watch Sky/BBC) are muted or at 0.
3. Verify sound settings and that devices are enabled
   1. Select Start > Settings > System > Sound.
   2. Under Output, confirm the correct output device is selected.
   3. Select the device → Device properties and ensure the Disable checkbox is not selected.
4. Run the Playing Audio troubleshooter
   1. Select Start > Settings > Update & Security > Troubleshoot.
   2. Under Find and fix problems, select Playing audio → Run the troubleshooter and apply any fixes it suggests.
5. Turn off audio enhancements
   1. In the search box, type control panel and open it.
   2. Go to Hardware and Sound > Sound.
   3. On the Playback tab, right‑click the default device → Properties.
   4. On the Enhancements tab, select Disable all enhancements or Disable all sound effects, select OK, then test Sky/BBC again.
6. Update or reinstall the audio driver (Windows 11)
   1. Press Win + X → Device Manager.
   2. Expand Sound, video and game controllers.
   3. Right‑click the laptop’s audio device (for example, Realtek/Intel/Surface Audio) → Update driver → Search automatically for drivers and complete the update.
   4. If no update is found or the issue persists, right‑click the device → Uninstall device → check Attempt to remove the driver for this device (or Delete the driver software for this device) → Uninstall.
   5. Restart the PC so Windows reinstalls the driver automatically, then test the channels again.
7. Check Windows Audio services
   1. Press Win + R, type services.msc, press Enter.
   2. Find Windows Audio and Windows Audio Endpoint Builder.
   3. Right‑click each → Restart and ensure Startup type is set to Automatic.

If sound works in other apps/sites but not in the specific Sky/BBC app or browser tab, also check that app’s own volume control and mute settings in the Volume mixer, and test in a different browser or app to confirm whether the issue is app‑specific.

References:

• Fix sound or audio problems in Windows
• No audio with Windows 11 - Microsoft Q&A
• How to fix this. no audio device is installed - Microsoft Q&A
• cannot increase volume even if trouble shooter updates it - Microsoft Q&A