I have a d5200t with Windows 7 Home Premium 64 bit on it. It has intergrated sound and also Sound Blaster X-Fi Xtreme audio. It also has RealTek. I would assume that RealTek is the on board intergrated sound. I'm using the Sound Blaster as my sound now. So on this computer you use one or the other depending on what you have set up in your bios, am I correct in that? If I wanted to use RealTek I would have to go into the bios and make the change, right?