My Surface Pro 7 has no sound overnight - Please help

Kindly go through the following Microsoft reference article:

Fix sound or audio problems in Windows

Uninstall, reinstall and update Audio driver.

Make sure Windows and Firmware are updated.

If your Surface Pro 7 has no sound, here are some troubleshooting steps you can try:

1. Check Audio Drivers: Open Device Manager and ensure that your audio drivers are installed and functioning properly. You may need to update or reinstall the audio drivers.
2. Run the Audio Troubleshooter: Go to Settings > System > Troubleshoot > Other troubleshooters and run the Playing Audio troubleshooter. This can help identify and fix issues with audio playback.
3. Check Volume Settings: Make sure that the volume is not muted and that the correct playback device is selected.
4. Reinstall Audio Device: If the audio device is still not working, you can try uninstalling it from Device Manager and then reconnecting it to allow Windows to reinstall the driver automatically.
5. Connect to Different Ports: If you are using a USB audio device, try connecting it to a different USB port to see if that resolves the issue.

If these steps do not resolve the issue, you may want to refer to additional resources for further assistance.

References:

• Optimize video conferencing on Surface devices
• Troubleshoot Surface sound and audio accessories