I have a core i7 system with ASUS P9X79 Pro motherboard and Coolermaster HAF X case. I have connected Creative Inspire 4400 4.1 channel speakers with 2 jacks at the back. Recently I have started experiencing this problem. I constantly keep getting this notification from Realtek sound manager that "you have plugged something into the front headphone jack" or "you have removed something from front headphone jack'. I have windows xp, 7 and 8 and all show the same problem. Wierdest part is if I change speaker setup from Realtek Sound Manager to Stereo mode from my existing Qudraphonic, I no longer get any notification. This problem is driving me nuts. . I have updated all the drivers and the BIOS to the latest version. I have connected the HD Audio Pin on the motherboard, and set Connector setting to HD Audio both in BIOS and realtek sound manager. PLEASE HELP !!!!!