I have a Lenovo G400s laptop running Windows 7 Ultimate. Everything's perfect except my sound. The speakers work fine when I play any song and set the volume to 40%, but it ceases to work as soon as I turn up the volume to 50% or more. Even decreasing the volume down to 40% doesn't help to get it back to work. I would have to close and restart the application to get my sound back.
What is the problem: my speakers or my sound driver? How can I solve this?