The short answer
Select the output you actually want to hear, then check volume at the Windows, application and physical-device levels. Silence in only one app is especially likely to be an app route or mixer issue rather than proof of a broken driver.
The three places sound can be attenuated
These Windows 11 checks apply to built-in speakers, USB speakers, headphones and display audio. Windows may remember a headset or monitor that is no longer useful. Many apps have their own output setting, and a monitor or powered speaker may also be muted independently. Start quiet and raise volume slowly.
An apparently broken laptop speaker
Imagine a laptop that was last connected to a meeting-room screen. The screen's audio endpoint remains selected when you return to the laptop, and the screen has no active speakers. A browser video is silent even though the laptop speaker and driver are healthy. Selecting the internal Speakers endpoint and testing a local sound distinguishes that route problem from missing hardware.
A conference app may retain a separate headset output after the headset is unplugged. Windows system notifications play through the laptop, but the call remains silent. Check the app's speaker choice; changing the system default alone may not override an explicit app selection. The reverse is possible for a microphone, which is selected independently.
If the Windows volume meter moves but there is still no audible result, that meter shows an audio signal in software, not sound at the physical speaker. Verify the monitor's own mute and power or the speaker cable. If the correct output is absent rather than merely silent, shift to connection and device-detection checks.
Locate the break without installing anything
Settings > System > Sound shows available outputs; select the intended one and check it is not muted. The taskbar volume control offers a quick route, while the Volume mixer can show per-app levels and routes. App settings can still override Windows' selection.
- Select the intended output in Settings > System > Sound and set a low but audible level.
- Check the app's mute, output choice and per-app volume in Volume mixer if available.
- Check the hardware's power, inline controls, monitor volume and physical connection.
- Play a known local sound in another app; record which output succeeds.
Caution: Do not jump straight to maximum volume after switching headphones or amplifiers.
What the checks reveal
If another app plays normally, inspect the silent app rather than replacing the controller driver. If selecting Speakers restores sound, the previous output was misrouted. If Windows shows level activity but the physical device remains silent, check power, cable, jack and external volume.
If the intended device is missing entirely, check its connection and Device Manager status; use the identification guide before choosing any package. A damaged cable or speaker may need replacement or service.