Hi egit123 and welcome to Windows 7 Forums
Some system specs would help here. Is your audio driver the latest from the hardware manufacturer, or are you using the one that came with Windows? If you are using the one that came with Windows, this could be the cause of the problem. Drivers supplied with Windows are only basic ones to ensure that the devices work. For full functionality, you will need to update the drivers with the versions found on the hardware manufacturers website.