I have a sony VAIO I just installed another sound card into it. I put it in the right slot it even reads inside my computer the card is a creative soundblaster PCI. I ran a cord up to the Cd rom drive from the soundcard its in correctly. I switched from my built in soundcard to the soundblaster and hit play in my windows media playier from the device manager and all I got was crackling and static. I made sure that the mute buttons were all unchecked. I have 3 places in the back of the soundcard I tryied all of them with my speakers to see if my speakers would play when I did use the right port I just got crackling. Also I updated my driver in it. Is their anything else I could be missing? I heard you can use a command in the command prompt to make sure its turned on inside your computer ,but I'm not sure what it is. Could I have some help please?