Hi @David Holbourne,
Welcome to Microsoft Q&A forum.
Based on your situation, I understand how frustrating it can be when your volume doesn't pack the punch it should, especially when you have it cranked up to 100%.
Please try the following steps to see if we can boost that output:
- Enable Loudness Equalization:
- Go to Settings > System > Sound.
- Scroll down to More sound settings (this opens the classic Sound window).
- In the Playback tab, right-click your active speakers/headphones and select Properties.
- Look for an Enhancements or Advanced tab.
- Check the box for Loudness Equalization. Click Apply and see if the volume increases.
- Check the Volume Mixer:
- Right-click the Speaker icon in your taskbar and select Open volume mixer.
- Ensure that both the System volume and the specific Apps you are using are all slid to the maximum.
- Update the Audio Driver:
- Right-click the Start button and select Device Manager.
- Expand Sound, video and game controllers.
- Right-click your audio device (e.g., Realtek Audio) and select Update driver.
- Choose Search automatically for drivers.
- Run the Audio Troubleshooter:
- Go to Settings > System > Troubleshoot > Other troubleshooters.
- Click Run next to Audio.
I hope this helps get your sound back to the level you expect! Let me know if the volume remains low after trying these steps.