No sound

Speakers are not working

Read the complete step before making changes. Stop if unsure or if new warnings appear.

Check the speaker symbol at the bottom right
Click on the speaker icon at the bottom right of the clock. If it's hidden, go to Settings → System → Sound.
Check volume and mute
Slowly move the volume control up and unmute. Also check the control on the speaker and in the respective program. Start quietly, especially with headphones.
Select the correct output device
Open Settings → System → Sound → Output. Choose your speakers or headphones, not accidentally the HDMI monitor. Play a known audio file to test.
Check cable/Bluetooth
Check whether the speakers have power and the plug is in the correct connection. Bluetooth headphones must be charged and connected. As a test, disconnect them from your phone if they connect there automatically.
Use Windows Audio troubleshooter
Windows 11: Settings → System → Troubleshoot → Other troubleshooters → Audio. Windows 10: Update and Security → Troubleshoot → Additional troubleshooters → Audio playback. Follow the assistant.
Update audio driver
First check Windows Update and any optional driver updates available there for your audio device. Alternatively, use the PC manufacturer's official support page for your exact model. Do not install third-party driver updaters.