Hi , Did it occur before? Have you made some changes before this issue occur? I suggest you update your audio driver to the latest version and check the result. Latest Realtek HD Audio Driver Version: http://www.realtek.com.tw/downloads/downloadsCheck.aspx?Langid=1&PNid=14&PFid=24&Level=4&Conn=3&DownTypeID=3&GetDown=false When the driver installation is complete, you will need to set your audio settings again in the Realtek HD Audio Manager in the Control Panel. Some OEM computers will have a custom version of the Realtek HD Audio Manager with the OEM manufacturer's name included instead. This thread for your reference: Realtek HD Audio Manager in Windows 7 disables the front input and output jacks.Tracy Cai TechNet Community Support

Hello, I am using an asus p9x79 pro motherboard with integrated sound. My audio driver is Realtek HD Audio. I have checked the forum and everyone suggests disabling the front panel, but my realtek hd audio manager looks nothing like the ones on screenshots and nothing works for me. I does not provide the option to turn off the front panel. This is what it looks like for me: http://img269.imageshack.us/img269/881/realtekhdaudiomanager.jpg I have been trying to disable the devices in the devices manager to no avail. This is really frustrating as I have spent two days in a row trying to get this thing to work and haven't got a tiniest bit of progress so far. Please help. Tim

Sometimes just uninstalling and reinstalling the driver works too.