click control panel then open you device manager, double click sound, video and game controller and click integrated digital audio then click roll back driver. if it does not happen any, you need to download sound driver that fits your laptop sound system.
I have a HP g7 Laptop that i just got, and when i plug my headphones in, i hear the sound in the headphones AND in the speakers. I tried multiple solutions, tried multiple headsets. no luck
I had that problem with my HP Laptop and i solved it by going to the realtek HD audio management and clicking on the advanced options on the top right corner choosing that the flux of the audio be played on different outputs and not on the same.