Hello, thank you for reaching out to Microsoft Q&A.
If the system audio output is generally low across all browsers and platforms, such as Zoom, Spotify, and Media Player, the issue may be driver-related.
If the problem happens only in a particular browser, you can open Volume Mixer and adjust that app’s audio level.
(Right-click the volume icon on the taskbar, select Volume Mixer> adjust all system and app sounds)
If the entire system audio output is low, try the following:
Test the system audio output first:
- Press Windows + R, type mmsys.cpl, and click OK.
- Right-click your default audio output device in the Playback tab, then select Properties.
- In the Advanced tab, click Test.
- Check whether the left and right speakers sound clear.
If the audio sounds clear and loud, try this:
- Open Device Manager.
- Expand Sound, video and game controllers.
- Right-click your default audio output device, such as Realtek(R), select Uninstall device, check Attempt to delete the driver software for this device, and then click Uninstall.
- After the device is uninstalled, restart your computer and check the audio output on your speakers.
Let me know if you still need more help.