Quote Originally Posted by hudsonsmith
Is this a pci card or integrated into the mother board? You should be able to remove a pci card w/o disassembling any fans. Remove screw or clip at rear of pc and pull card straight up. Make sure power cord is disconnected from pc.

Have you confirmed that the purple jack is actually a headphone jack? It is also possible that it is dual function controlled by a jumper.
It is a PCI card and the problem is the fan is right in front of it. And there is not much gap to pull out the sound card. According to creative lab, the model number should be CT4700, Ct4751 or CT4750.

For the purple jack, I have tried with mic. but it is not working.
Thank you so much for your replies.