I own a Samsung M50 Laptop in the midst of built in Realtek Sound gadget and with built in speakers too. I have previously installed the newest 2.6 Drivers for windows 7 ultimate commencing the Realtek website. When I looked into the device manager it demonstrates me a "High-Definition Audio Device". They were already up-to-date. The problem is, the merely output gadget it demonstrates me is a S/PDIF output. But as far as I know there is no S/PDIF in my laptop. So the sound is not coming through either from speaker or from headphone output. I still not able to solve it, so I am asking for a help now.