Select the headphone option in the playback, tap and select the default button.If the sound problem is caused by an incorrect sound setting. If you are using a USB headphone, change the USB port.Check the sound setting if the sound is on mute, the headphone will not sound.Check the connection, unplug the headphone and plug it back again.
This is probably the very first thing to do.
The following solutions will help you out: Troubleshoot the Problem It could be as a result of incorrect sound settings, faulty drivers, etc. If your headphone is not sounding loud in Windows 7, we recommend the following solutions to help rectify the issue. Windows 7 has the feeblest sound compared to other operating systems.
Many users complain about the poor sound produced by the operating system.
Are you wondering why your headphones are not loud on Windows 7?